共 17 条
- [1] INCREASING LAND SURFACE FOR ARABLE CROPS - ECONOMIC-ASPECTS OF CROP-ROTATION SCHWEIZERISCHE LANDWIRTSCHAFTLICHE MONATSHEFTE, 1979, 57 (03): : 91 - 105
- [2] ECONOMIC-ASPECTS OF CYPERUS-ESCULENTUS IN ARABLE CROPS COMMUNICATIONS OF THE FACULTY OF AGRICULTURAL SCIENCES OF THE STATE UNIVERSITY OF GHENT, VOL 53, PTS 2A, 2B, 3A, 3B: 1988 INTERNATIONAL SYMPOSIUM ON CROP PROTECTION, 1988, 40 : 1353 - 1362
- [3] ECONOMIC-ASPECTS OF BIOGAS PRODUCTION FROM COMMERCIAL FARM CROPS BERICHTE UBER LANDWIRTSCHAFT, 1983, 61 (01): : 109 - 143
- [4] SOME ECONOMIC-ASPECTS OF THE INCREASING TECHNOLOGICAL INTERDEPENDENCE OF FIXED ASSETS CHEMISCHE TECHNIK, 1979, 31 (09): : 448 - 451
- [5] TECHNICAL AND ECONOMIC-ASPECTS OF THE DIFFERENT FIBER FABRICATION PROCESSES ANNALES DES TELECOMMUNICATIONS-ANNALS OF TELECOMMUNICATIONS, 1983, 38 (1-2): : 36 - 46
- [6] THE EFFECTS OF GRADUALLY DIFFERENT INTENSITIES OF GROWING WHEAT ON PESTS AND DISEASES, YIELDS AND ECONOMY .2. ECONOMIC-ASPECTS ZEITSCHRIFT FUR PFLANZENKRANKHEITEN UND PFLANZENSCHUTZ-JOURNAL OF PLANT DISEASES AND PROTECTION, 1990, 97 (03): : 284 - 298
- [8] THE PRODUCTIVITY OF STAPLE CROPS IN CHEMICALLY TREATED AND BIOLOGICAL CROP ROTATIONS AT DIFFERENT SITES ROSTLINNA VYROBA, 1985, 31 (10): : 1111 - 1118
- [10] ECONOMIC-ASPECTS OF THE EFFECTS OF FERTILIZERS, SOIL-MOISTURE AND RAINFALL ON THE YIELDS OF GRAIN-SORGHUM IN THE SANDY LANDS OF SOUTHWEST KANSAS JOURNAL OF FARM ECONOMICS, 1958, 40 (03): : 697 - 708