00397nam a2200097Ia 4500008004100000050002100041100002200062245006000084247008400144264007100228230508s1979    xx            000 0 und d  aBF 721 S469 19791 aShaffer, David R.10aSocial and personality development /cShaffer, David R.  aSocial and personality development_BF 721 S469 1979 c. 2_Shaffer, David R._1979  a[Place of publication not identified] : bCole Publishing, c1979.