共 50 条
- [1] SOCIOLOGICAL ASPECTS OF THE LOW-INCOME FARM PROBLEM JOURNAL OF FARM ECONOMICS, 1955, 37 (05): : 1417 - 1427
- [3] TRENDS AND CHARACTERISTICS OF FARM POPULATION IN LOW-INCOME FARMING AREAS JOURNAL OF FARM ECONOMICS, 1955, 37 (05): : 1399 - 1407
- [5] DEMOGRAPHIC-ASPECTS OF AGING METHODS AND FINDINGS IN EXPERIMENTAL AND CLINICAL PHARMACOLOGY, 1987, 9 (03): : 143 - 147