TY - BOOK AU - Eckholm, Erik P. TI - Losing Ground: Environmental Stress and World Food Prospects SN - 0393091678 U1 - 338.19 PY - 1976/// CY - New York PB - W. W. Norton and Company KW - Economics KW - Social sciences KW - Agriculture KW - Environmental aspects KW - Food supply KW - Soil erosion ER -