00397nam a2200157Ia 4500008004100000020001400041084001300055100002400068245002900092250002000121260001900141260000900160260002200169300001300191500003500204180424s9999    xx            000 0 und d  a132082233  a155.4 L3  a"Liebert, Robert M" 0aDevelopmental Psychology  a\\197400ENGGPCX  aPrentice Hall   b1974  cEnglewood Cliffs   axxi+676p  aincludes index and biblioraphy