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by James S. Coleman, John M. Mays, Robert H. Bremner, Burton R. Clark, John B. Davis, Dorothy H. Eichorn, Zvi Griliches, Joseph F. Kett, Norman B. Ryder, Zahava Blum Doering

Reproduction in the U. S. 1965

by Norman B. Ryder, Charles F. Westoff

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