Ramirez, D. M. (1988). Indigenous soil conservation strategies in the Philippine upland farms. Environment and Policy Institute, Eastwest Center.
Chicago-viite (17. p.)Ramirez, Domingo M. Indigenous Soil Conservation Strategies in the Philippine Upland Farms. Honolulu, Hawaii: Environment and Policy Institute, Eastwest Center, 1988.
MLA-viite (9. p.)Ramirez, Domingo M. Indigenous Soil Conservation Strategies in the Philippine Upland Farms. Environment and Policy Institute, Eastwest Center, 1988.
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