Ordish, G. (1967). Biological methods in crop pest control: An introductory study. Constable.
Chicago-viite (17. p.)Ordish, George. Biological Methods in Crop Pest Control: An Introductory Study. London: Constable, 1967.
MLA-viite (9. p.)Ordish, George. Biological Methods in Crop Pest Control: An Introductory Study. Constable, 1967.
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