共 50 条
- [21] SPECIAL PROBLEMS IN AGRICULTURAL ECONOMICS EXTENSION IN THE NORTHEAST JOURNAL OF FARM ECONOMICS, 1952, 34 (05): : 842 - 844
- [22] THE IDENTIFICATION OF PROBLEMS IN AGRICULTURAL-ECONOMICS RESEARCH JOURNAL OF FARM ECONOMICS, 1960, 42 (05): : 1459 - 1471
- [23] POSTWAR EXTENSION PROBLEMS IN GENERAL AGRICULTURAL ECONOMICS JOURNAL OF FARM ECONOMICS, 1946, 28 (01): : 199 - 212
- [24] THE PROBLEMS OF TEACHING AGRICULTURAL-ECONOMICS IN INDIA JOURNAL OF FARM ECONOMICS, 1961, 43 (05): : 1549 - 1550
- [25] Dr. Moses Cousins Jr.: The mysterious Iowa contributor to Alphonso Wood’s Class-book of Botany Brittonia, 2017, 69 : 253 - 264
- [26] THE IDENTIFICATION OF PROBLEMS IN AGRICULTURAL-ECONOMICS RESEARCH - DISCUSSION JOURNAL OF FARM ECONOMICS, 1960, 42 (05): : 1471 - 1474
- [27] PROBLEMS AND CHALLENGES IN REFORMING INTERNATIONAL AGRICULTURAL-ECONOMICS CANADIAN JOURNAL OF AGRICULTURAL ECONOMICS-REVUE CANADIENNE D ECONOMIE RURALE, 1993, 41 (04): : 387 - 394
- [28] PRESENT PROBLEMS IN AGRICULTURAL AND FOOD ECONOMICS IN EXPANDED COMMUNITY ZUCKER, 1973, 26 (06): : 298 - 301
- [29] AGRICULTURAL-ECONOMICS TEACHING AND OUR DOMESTIC PROBLEMS JOURNAL OF FARM ECONOMICS, 1962, 44 (05): : 1339 - 1349