Mary Ann Liebert (http://www.liebertonline.com/) 55 authoritative publications in the most exciting and promising areas of biomedical research, clinical medicine, surgery, law, and science.
Nature Publishing Group (http://www.nature.com/siteindex/index.html) All 72 titles from the Nature Publishing Group, now including the previously excluded Nature Geoscience, Nature Materials, Nature Nanotechnology, Nature Photonics, Nature Physics, Nature Protocols.
SPIE Digital Library (http://www.SPIEDigitallibrary.org) The most extensive resource available on optics and photonics. Technical papers from SPIE Journals and Conference Proceedings from 1990 to the present. More than 17,000 new technical papers are added annually.
Thousands of titles across many publishers related to environment but often much wider in subject coverage. Includes over half of the titles from Elsevier, around 500 from Sage, over 100 from Taylor and Francis etc.