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2. Baldwin B. T. The Physical Growth of Children from Birth to Maturity. (Iowa City: University of Iowa Studies, Studies in Child Welfare, 1: No. 1, First Series No. 50, 1921, 411 pp.)
3. Baldwin B. T., Anatomic Growth of Children. (Iowa City: University of Iowa Studies, Studies in Child Welfare, 4: No. 1, 1928, 88 pp.)
4. Bayley N. The California First Year Mental Scale. (Berkeley: University of California Press, 1933. 24 pp.)