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- [4] SCHOLASTIC PROGRESS OF CHILDREN FROM DIFFERENT SOCIOECONOMIC GROUPS, MATCHED FOR IQ DEVELOPMENTAL MEDICINE AND CHILD NEUROLOGY, 1976, 18 (06): : 717 - 727
- [7] PROBLEM OF VERBAL LEVEL OF IQ-EQUIVALENT SCHOOLCHILDREN WITH DIFFERENT SOCIOCULTURAL GROUPS SCHULE AND PSYCHOLOGIE, 1970, 17 (07): : 212 - 223