TY - BOOK AU - Eckholm,Erik P TI - Losing ground : environmental stress and world food prospects SN - 0393091678 AV - S589.7 .E23 1976 U1 - 333.75 22 PY - 1976/// CY - New York PB - W W Norton KW - Agriculture KW - Environmental aspects KW - Nature KW - Effect of human beings on KW - Food supply KW - Soil erosion N1 - Includes index; Bibliography: p. [203]-219 ER -