Shepard, Ward
Food or famine: challenge of erosion / Ward Shepard - New York : Macmillan , 1947 - x, 225p. : ill. ; 20 cm.
Includes bibliographical references and index.
Agriculture
Soil conservation
Food
Soils
631.4 / SHE
Food or famine: challenge of erosion / Ward Shepard - New York : Macmillan , 1947 - x, 225p. : ill. ; 20 cm.
Includes bibliographical references and index.
Agriculture
Soil conservation
Food
Soils
631.4 / SHE