title: Searching the literature of veterinary science: a comparative study of the use of 10 information systems for retrospective searches from January 1972 to December 1974.
mesh_terms: D005860:Germany, West; D007256:Information Systems; D008523:MEDLARS; D009426:Netherlands; D013557:Switzerland; D006113:United Kingdom; D014481:United States; D014730:Veterinary Medicine