Conservation of the soil,
Gustafson, A. F. 1880-1942.
Conservation of the soil, by A. F. Gustafson... - 1st ed. - New York and London, McGraw-Hill, 1937. - xvii, 312p. illus. 24cm. - McGraw-Hill publications in the agricultural and botanical sciences, E. W. Sinnott, consulting editor .
Bibliography at end of some of the chapters.
Erosion
Soils--United States
631.45 / GUC1937
Conservation of the soil, by A. F. Gustafson... - 1st ed. - New York and London, McGraw-Hill, 1937. - xvii, 312p. illus. 24cm. - McGraw-Hill publications in the agricultural and botanical sciences, E. W. Sinnott, consulting editor .
Bibliography at end of some of the chapters.
Erosion
Soils--United States
631.45 / GUC1937