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1. The origins of human competence :   Publication: Lexington, Mass. : D. C. Heath and Co., 1979 . xiv, 436 p. Date:1979 Availability: Copies available: Turkeyen Campus Education & Humanities [BF 723 A25 W47] (1), Actions: Add to cart
2. Human infants;   Publication: Englewood Cliffs, N.J., Prentice-Hall 1971 . xv, 160 p. 24 cm. Date:1971 Availability: Copies available: Turkeyen Campus Education & Humanities [BF723.I5 W45] (1), Actions: Add to cart