Pushparajah. (1982). The oil palm in agriculture in the eighties volume I. The Incorporated Society of Planters.
Chicago-viite (17. p.)Pushparajah. The Oil Palm in Agriculture in the Eighties Volume I. The Incorporated Society of Planters, 1982.
MLA-viite (8. p.)Pushparajah. The Oil Palm in Agriculture in the Eighties Volume I. The Incorporated Society of Planters, 1982.
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