Oxford English Dictionary 2nd and 3rd draft Editions. Updated quarterly SIRS Researcher Full-text. U.S. Patent Citation Database Search for patents from 1975 on. The British Medical Journal provides access to both current and archived issues at no cost. Molecular sequence retrieval system for nucleotide and protein sequences.
Life sciences research.
Life, physical, medical, technical, and social sciences. From the National Agricultural Library. Marine and freshwater environments. Publications and research projects on northern Canada. Bibliographia Nudibranchia Comprehensive.