Stewart, Leland, Pollution [electronic resource] / [compiled by] Leland Stewart and Wentworth Clarke. Editor: Ruth Ann Whitten. Consultants: William Rasmussen and J. Doyle Casteel.. — New York, : John Day Co., [1971]. — 123 p. : illus. 23 cm. — (Priorities for the 70's). - Priorities for the 70's. .
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