De Guzman, D. Swine production in the Philippines: A project study. n.p.
Chicagoスタイル(17版)引用形式De Guzman, Danilo. Swine Production in the Philippines: A Project Study. [Manila: n.p.
MLA(9版)引用形式De Guzman, Danilo. Swine Production in the Philippines: A Project Study. n.p.
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