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Friedman, Milton. The Social Responsibility of Business Is to Increase Its Profits. New York Times Magazine, September 13, 1970. Copyright 1970 The New York Times Company.
Putnam Investments
Slater, Michael (ed.): "Dickens 1970: Centenary Essays", Stein & Day, 1970
Dickens as a Social Reformer
Borman, F.H. and G.E. Likens. 1970. "The Nutrient Cycles of an Ecosystem." Scientific American, October 1970, pp 92-101.
The Ecosystem
Chenault Lawrence R. The Puerto Rican Migrant in New York City. New York: Russell and Russell, 1970 Harlem. (2004). In Encyclopedia Britannica.com [premium service].
Ethnic Groups in Harlem from 1890-1970
Krutch, Joseph Wood. "The Tragic Fallacy." A Krutch Omnibus. New York: William Morrow and Company, Inc., 1970. 14 - 27.
The Tragic Hero in Modern Literature
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