Patty. T Earle Child development : an observation manual - New Jersey Prentice Hall , Inc 1982 - 219p Patty. T Earle; Cosby. S Rogers & Jean. G Wall: Child development : an observation manual. New Jersey. Prentice Hall , Inc, 1982. 0-13-130427-7--(155.4EAR) ENGLISH ISBN: 0-13-130427-7 Dewey Class. No.: 155.4 / EAR