Fundamentals of soil science / H. D. Foth and L. M. Turk. Foth, H. D. Turk, L. M. 1906-1971. Soil science. 631.4 23 FOF Includes bibliographical references and index. New York : John Wiley & Sons, c1972. c1972. 1972 Text xi, 454 p. : eng