543,419 BEHAVIOR Behavior and adaptation in late life / ed. hy Ewald W. Busse, Eric.Pfeiffer ; /contr. aut. Kurt W. Back et al./. - 2 ed. — Boston ; Little, Brown and Co., /1977/. — XIV, [2], 382 s. ; 24 cm ISBN 0-316-11833-8 (C) ISBN 0-316-11834-6 (P)