共 50 条
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- [3] A STUDY OF THE CAUSAL FACTORS FOR FARM MECHANIZATION IN SRI-LANKA JOURNAL OF THE FACULTY OF AGRICULTURE KYUSHU UNIVERSITY, 1983, 28 (2-3): : 91 - 110
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- [9] VITAMIN-A STATUS OF CHILDREN IN SRI-LANKA AMERICAN JOURNAL OF CLINICAL NUTRITION, 1979, 32 (01): : 84 - 91