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Dyfyniad Arddull ChicagoLasco, Rodel D. Agroforestry Systems in the Philippine Uplands. S.l: s.n, 1987.
Dyfyniad MLALasco, Rodel D. Agroforestry Systems in the Philippine Uplands. s.n, 1987.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.