A keyword listing of serial titles currently received by the National Library of Medicine.

First multi-year cumulation covers six years: 1965-70.

This list includes all serials, printed and processed, received by the Library of the United States Department of Agriculture, on a current basis, as of July 1, 1957. Only dailies or administrative use are omitted. A serial is defined as a publication that is issued either regularly or irregularly over an unspecified period of time. For the purposes of this list, a serial was considered current if it had been received in the Library at any time since January 1954, unless it was known to have ceased.

Issues for 1977-1979 include also Special List journals being indexed in cooperation with other institutions. Citations from these journals appear in other MEDLARS bibliographies and in MEDLING, but not in Index medicus.