共 50 条
- [22] DEVELOPMENT OF INDEXED-POSITION SPRINKLERS AND SYSTEM DESIGN FOR YEAR-ROUND IRRIGATION. Transactions of the American Society of Agricultural Engineers, 1980, 23 (03): : 608 - 614
- [24] A NATURAL TRANSMISSION BELT FOR THE YEAR-ROUND SUPPLY OF FRESH FARM PRODUCTS SOVIET GEOGRAPHY REVIEW AND TRANSLATION, 1963, 4 (02): : 25 - 32
- [30] TRUE YEAR-ROUND COLLEGE NATIONAL ASSOCIATION OF COLLEGE TEACHERS OF AGRICULTURE JOURNAL, 1978, 22 (03): : 30 - 31