OLDMEDLINE contains citations from 1946
http://www.nlm.nih.gov/pubs/techbull/nd10/nd10_oldmedline.html
and therefore also in the searchable PubMed database
The thesaurus MeSH Medline turns 50! E 'was published for the first time in 1960 and contained 4300 descriptors. The 2011 edition contains 26000.
http://www.nlm.nih.gov/pubs/techbull/nd10/nd10_mesh_50th_anniv.html
Da Novembre, e' stata modificata la pagina dei Limits
http://www.nlm.nih.gov/pubs/techbull/nd10/nd10_diet_vet.html
Ci sono due nuovi Subsets " Dietary Supplements " e " Veterinary Science ". Nei Publication Types, ci sono le nuove voci: " Autobiography " e " Video-audio Media "
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