American Society of Agronomy, Crop Science Society of America, and Soil Science Society (ACSESS) includes online access to five ACSESS journal articles dating back to 1997
Peer reviewed scientific video journal. Sections include Research and Science Education (video textbooks, lab manuals, basic experiments and protocols etc).
U.S. National Library of Medicine database with citations to biomedical literature from MEDLINE, life science journals, and online books. Using this PubMed link gives you access to more resources via