Soil and water conservation engineering /
Richard K. Frevert. ...[et al.].
- New York : John Willey, c 1955.
- xiii, 479 p. : ill. ; 22 cm.
Includes index.
337 337
Soil conservation.
Water conservation.
631.4 / S34
Includes index.
337 337
Soil conservation.
Water conservation.
631.4 / S34