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Caddel, J. L. and Weibel, D. E. (1971) Effect of Photoperiod and Temperature on the Development of Sorghum. Agronomy Journal, 63 (5). pp. 799-803. ISSN 1125-4718
Sahrawat, K L and Parmar, B S (1971) Plant production and plant protection chemicals. scope of fertilizer-pesticide mixtures. Indian Farming, 21 (5). pp. 28-29. ISSN 0019-4786