Digitization: Impact on MEDLINE/PubMed from the PubMed Central Back Issue Digitization Project
From the article:
As of April 2007 under the PubMed Central Back Issue Digitization Project, the National Library of Medicine (NLM) has digitized nearly 40 journals back to the first volume for each title and has deposited the full text contents in PubMed Central (PMC). Publishers of those titles continue to deposit full text content for current material. This project, funded in part by the Wellcome Trust in the United Kingdom, has yielded the creation of over 70,000 “new” citations, including author abstracts when available, all of which have now been added to PubMed. About 38,000 are from issues that predate 1966 as the date of publication; some date to the late 1800’s (e.g., Journal of Anatomy and Physiology). About 32,000 are from issues published from 1966 forward. These consist of issues that predate when the title was selected for indexing (e.g., Texas Heart Institute Journal) as well as those that belong to journals which were or are selectively indexed for MEDLINE (e.g., Plant Physiology, and Proceedings of the National Academy of Sciences).
Source: NLM Technical Bulletin
