**A-Z E-resources Databases: O

OAIster searches freely available Open Access electronic documents and resources. Content includes theses, technical reports, research papers, and more.

ONE National Gay & Lesbian Archives at the USC Libraries is the largest repository of Lesbian, Gay, Bisexual, Transgender, Queer (LGBTQ) materials in the world. Founded in 1952, ONE Archives currently houses over two million archival items including periodicals, books, film, video and audio recordings, photographs, artworks, organizational records, and personal papers. ONE Archives has been a part of the University of Southern California Libraries since 2010.

OnePetro.org is a multi-society library that provides a simple way to search for and access a broad range of technical literature related to the oil and gas exploration and production industry. From one place, you can search and buy documents from many different professional societies, or similar organizations, that serve the oil and gas industry.

Please note that domain address validation will now occur on OnePetro within each user's My OnePetro account. The steps to domain address validate are as follows. Click on Register and complete a very short form to build your own My OnePetro account. Once done, click on My Account,then click on the Go button under Domain Validation. You will be asked to click on a button that says Validate Me. Once validated, access will be granted for 90 days.

A regularly updated electronic database focusing on massacres and genocides of the 20th century. Resources provided include chronological indexes, case studies, analytical contributions on socio-political violence in a given country, a glossary of the terms most often used in the field of genocide studies as well as theoretical papers written by the most representative authors in the field.

A collection of tools and converters for such topics as fractions, length, temperature, speed, volume, weight, cooking, area, fuel economy, currency, dates, time, and much more.

Database of free, open access full-text graduate theses and dissertations published around the world.

Performances, staged productions, interviews, and documentaries. (Alexander Street / ProQuest)

Optical Society of America (OSA)'s online library for OSA flagship journals and for partnered and co-published journals. It contains recent proceedings from OSA and has a variety of simple and advanced search and browse features for locating articles. Provided by Optica Publishing Group.

US and international company information from Bureau van Dijk including Datamonitor market research and company reports (same content as Mint Global with a different interface).

The digital version of David Daniels' reference work; search compositions by duration, instrumentation, chorus type, and soloists.

US and international public company information from Bureau van Dijk.

This database contains abstracts of systematic reviews and randomized controlled trials relevant to occupational therapy. Trials have been critically appraised to assist with evaluation.

Grove Art Online provides web access to the entire text of The Dictionary of Art (1996, 34 vols.) with annual additions of new material and updates to the text, plus extensive image links and all the sophisticated search advantages possible with an online reference source.

Access to the database is limited to 6 users.

Developed cooperatively with scholars and librarians worldwide, Oxford Bibliographies offers exclusive, authoritative research guides on a wide range of topics. Combining the best features of an annotated bibliography and a high-level encyclopedia, this cutting-edge resource guides researchers to the best available scholarship across a wide variety of subjects.

Over 63,000 biographies, 75 million words, 12,000 portraits of significant, influential or notorious figures who shaped British history. the national record of men and women who have shaped British history and culture, worldwide, from the Romans to the 21st century. The Dictionary offers concise, up-to-date biographies written by named, specialist authors. It is overseen by academic editors at Oxford University, UK, and published by Oxford University Press.

Widely regarded as the accepted authority on the English language, the OED is an comprehensive guide to the meaning, history, and usage of 500,000 words and phrases past and present, from across the English-speaking world.

E-book version of Richard Taruskin’s narrative account.

Provides access to a search interface that retrieves articles across all Oxford titles; searches can be limited to specific subject categories.

Provides fully searchable, completely comprehensive bilingual dictionaries, and unique study materials including Spanish, French, German, Italian, Russian, Chinese and Arabic. Note: this is NOT the Oxford English Dictionary.

Grove Music Online, the New Grove Dictionary of Opera, the New Grove Dictionary of Jazz, the Oxford Dictionary of Music, and the Oxford Companion to Music. (Access is limited to 10 concurrent users.)

The Core Collection brings together 100 language and subject dictionaries and reference works - containing well over 60,000 pages - into a single cross-searchable resource.
Access to the database is limited to 5 users.

Oxford Scholarship Online (OSO) provides scholarly ebooks on a wide range of subjects. Chapters can be downloaded as PDFs. Subject areas include Biology, Business and Management, Classical Studies, Economics and Finance, History, Law, Linguistics, Literature, Mathematics, Music, Neuroscience, Palliative Care, Philosophy, Physics, Political Science, Psychology, Public Health and Epidemiology, Religion, Social Work, and Sociology. OSO also includes the full text of some publications from other university presses.

Collects, catalogues, preserves and distributes high-quality digital electronic texts and other literary and language resources for research and teaching. It currently holds thousands of texts in more than 25 different language (e.g., Middle High German, Ancient Greek, and Sanskrit). As of November 2021, no new deposits are being made until further notice.

Research reports from Oxford Analytica and others covering world and regional economic and political developments of major significance, country profiles and research reports. Provided via the ProQuest Business Market Research Collection.

Web OYA-bunko or The Oya Soichi Library Periodicals Index Retrieval Service is an online index for magazine articles provided by Oya Soichi Library. It covers publications of Japanese popular magazines from Meiji Period to the present. To the current almost 6 million index records, they annually add ca. 200,000 records. Our consortium subscription provides one simultaneous access.