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	1		Cranor, Carl F. Regulating toxic substances : a philosophy of science and the law / Carl F. Cranor . — New York : Oxford Univeristy Press, 1993. — 252 p. ; 24 cm. — ( Environmental ethics and science policy)
	2		Cranor, Carl F. Regulating toxic substances : a philosophy of science and the law / Carl F. Cranor . — New York : Oxford Univeristy Press, 1993. — 252 p. ; 24 cm. — ( Environmental ethics and science policy)