544,033 ANGERMEIER W. F. The evalution of operant learning and memory : a comparative etho-psychology / W. F. Angermeier ; with a contribution by Peter Bednorz. - Basel /etc./ : S. Karger, 1984. - VI I, /5/, 204 s. : il., wykr. ; 25 cm ISBN 3-8055-3736-0