This publication in the (US) National Library of Medicine's renowned Current Bibliographies in Medicine, is the ninth in a continuing series produced each year since 1984 on laboratory animal welfare. The current issue, which has been prepared by F P Gluckstein, is made up of eighty-six selected and annotated citations and covers the period January to December 1991. The entries are classified under some ten headings ranging from Historical Aspects through Replacement, Reduction, Refinement, and Biomedical Education and Training, to Monographs and Bibliographies.