Gilling, J
Needs assessement for agricultural development : Practical issues in informal data collection / J. Gilling, J.P.Cropley
[n.b].: Natural Resources institute, 1993
24 tr.; 22 cm
Ký hiệu xếp giá: 338.1 GIL 1993Agriculture
Tiêu đề đề mục: Nông nghiệp

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