00310nam a2200121Ia 4500003000400000020001500004040000800019082001700027100002300044245005500067260005100122300001500173LDD  a0030018374  cLDD  a155.4 R188 U  aRathus, Spencer A. 0aUnderstanding child developmentcSpencer A. Rathus  aPhiladelphiabHolt, Rinehart and winstonc1988  axxiv, 676p