Singh, K. I., Singh, C. H., Singh, M. P. and Gupta, M. K. (2009) “Predation Efficiency of Five Coccinellid Beetles on <I>Aphis craccivora</I> Koch Infesting Cowpea”, Journal of Biological Control, 23(1), pp. 49–52. doi: 10.18311/jbc/2009/3615.