共 50 条
- [49] THE LAND RESOURCE FOR AGRICULTURE [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES, 1985, 310 (1144): : 151 - 159
- [50] CAUSES OF INTERVENTION IN CANADIAN AGRICULTURE [J]. CANADIAN JOURNAL OF AGRICULTURAL ECONOMICS-REVUE CANADIENNE D ECONOMIE RURALE, 1990, 38 (04): : 785 - 795