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1by Pollock, George F.### CRL customization ### ?> ### Add publisher and desc details ### ?>
Published 1969Columbus, Ohio, American Education Publications, c1969.47 [1] p. illus. 22 cm.Subjects: “...Conservation of natural resources United States Textbooks....”
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2Published 1946### CRL customization ### ?> ### Add publisher and desc details ### ?>Ithaca, N.Y., Comstock, 1946.xi, 477 p. illus. 25 cm.Subjects: “...Conservation of natural resources United States Textbooks....”