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Sharma, H C (1994) Phagostimulant activity of sucrose ,sterols, and soybean leaf extractables to the cabbage looper Trichoplusia ni (Lepidoptera: Noctuidae). Insect Science and its Application, 15 (3). pp. 281-286. ISSN 0191-9040
Van Evert, F K and Campbell, G S (1994) CropSyst: a collection of object-oriented simulation models of agricultural systems. Agronomy Journal , 86 (2). pp. 325-331. ISSN 0002-1962