00441nam a2200157Ia 450000500170000000800410001704100080005808200180006610000110008424500670009526000380016230000140020065000210021465000260023565000220026120191003115528.0190710s9999    xx            000 0 und d  aeng  a136.766 M857M  aMTIRMR 0aMentally retarted children b: an intensive study of 100 cases  aBombayb:Popular Prakashan,c1972  aix, 103p.  aChild psychology  aMentally handicapped   aChild development