共 50 条
- [46] IMPROVING SOIL RESOURCES OF ARID LANDS - CONTROL OF LOSSES AND INCREASE IN PRODUCTIVITY OF LANDS IN ARID AND SEMIARID AREAS EKISTICS-THE PROBLEMS AND SCIENCE OF HUMAN SETTLEMENTS, 1977, 43 (258): : 279 - 280
- [48] IMPROVING SOIL RESOURCES OF ARID LANDS - LANDMIX IN AN ARID REGION EKISTICS-THE PROBLEMS AND SCIENCE OF HUMAN SETTLEMENTS, 1977, 43 (258): : 280 - 282
- [50] CONTRIBUTIONS OF HISTORY TO ARID LANDS STUDIES SOCIAL SCIENCE JOURNAL, 1978, 15 (03): : 43 - 47