共 50 条
- [21] THE ROLE OF GEOGRAPHERS IN THE STUDY, MAPPING, ECONOMIC APPRAISAL, UTILIZATION, CONSERVATION AND RENEWAL OF THE NATURAL-RESOURCES OF THE USSR SOVIET GEOGRAPHY REVIEW AND TRANSLATION, 1960, 1 (06): : 3 - 10
- [24] CONSERVATION OF NATURAL-RESOURCES PROCEEDINGS OF THE ROYAL SOCIETY OF EDINBURGH SECTION B-BIOLOGICAL SCIENCES, 1986, 90 : 469 - 478