Shang, T C .
Soil conservation for small farmers in the humid tropics / Textual Documents T C Shang. - 1 / . - Rome : Food and Agriculture organization of United States , 1989. - 103 ; .
631.45 / SHE/SO
Soil conservation for small farmers in the humid tropics / Textual Documents T C Shang. - 1 / . - Rome : Food and Agriculture organization of United States , 1989. - 103 ; .
631.45 / SHE/SO