PubMed Central® (PMC) is a free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM). This is a subset of PubMed, as it only includes the articles/sources that are openly available.
A pioneer of open access publishing, BMC has an evolving portfolio of high quality peer-reviewed journals including broad interest titles available through Springer Nature. Browse the "Explore Journals" for other subject areas of interest.
Covering more than 600 academic disciplines, the 75+ "Frontiers in" journals are open access, peer-reviewed journals with high impacts in their disciplines. There is currently no subject category offered through their site, just an A-Z by title list. Titles include:
Hindawi publishes peer-reviewed, Open Access journals across many areas of science, technology, and medicine, as well as several areas of social science. There is currently no subject category offered through their site, just an A-Z by title list. Titles include:
A one stop shop for Open Access Journals (journals with a funding model that does not charge readers or their institutions for access). Journals must exercise peer-review or editorial quality control to be included. All subject areas are covered. Uses can search by journal title or browse titles. No searching of contents of journals is provided. Journals listed in the DOAJ will also be listed in our Journal Title Database.
OpenDOAR is the quality-assured global directory of academic open access repositories. It enables the identification, browsing and search for repositories that are of use to academic researchers. Use this to locate additional institutional repositories that may contain an open version of a publication you are trying to access.
The Core Historical Literature of Agriculture is a core electronic collection of scanned agricultural texts. Full-text materials cover agricultural economics, agricultural engineering, animal science, crops and their protection, food science, forestry, human nutrition, rural sociology, and soil science. 1620-1999.
Science.gov searches over 60 databases and over 2,200 scientific websites to provide users with access to more than 200 million pages of authoritative federal science information including research and development results.
PubAg covers all of the core topics of the agricultural sciences including nutrition, food safety, food quality, animal and crop production and protection, natural resources, sustainable agricultural systems, rural development, agricultural economic and policy issues, agricultural imports and exports, agricultural statistics, extramural research, and Extension education.
You can freely search most publishers platforms directly, however be aware that unless the item is available through Open Access (OA) (Look for an "unlocked" padlock, or "green" (for go) icon that indicates the material is openly available) you will be prompted to purchase access to the article/book chapter.
For sources not immediately available through OA, you can use one of the options below or to the right side of this page to determine if there is an open version available or request through your public library.
The underlying mission of a land grant or public university is to provide research and information to the public. If you live or are near a land grant or public university, you will be able to use the public computers in that university's library (or libraries as many have multiple branches) at no charge (note, there may be a fee for printing).
If you do not reside or will be near a public or land grant university, you can also request items through your local public library's Interlibrary Loan (ILL) service. Note, there is often a fee associated with this service, so be sure to ask about pricing and policies before submitting your request.