共 50 条
- [22] Soil Conservation and Floods ANNALS OF THE AMERICAN ACADEMY OF POLITICAL AND SOCIAL SCIENCE, 1952, 281 : 181 - 188
- [24] Elements of Soil Conservation JOURNAL OF LAND AND PUBLIC UTILITY ECONOMICS, 1947, 23 (04): : 444 - 445
- [26] The Economics of Soil Conservation CANADIAN JOURNAL OF ECONOMICS & POLITICAL SCIENCE, 1943, 9 (02): : 262 - 265
- [27] Soil conservation in Australia JOURNAL OF SOIL AND WATER CONSERVATION, 2003, 58 (06) : 112A - 113A