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Khan, A.A. and Mir, R.A. 2008. Functional Response of Four Predaceous Coccinellids, <I>Adalia tetraspilota</I> (Hope), <I>Coccinella septempunctata</I> L., <I>Calvia punctata</I> (Mulsant) and <I>Hippodamia variegata</I> (Goeze) Feeding on the Green Apple Aphid, <I>Aphis pomi</I> De Geer (Homoptera: Aphididae). Journal of Biological Control. 22, 2 (Dec. 2008), 291–298. DOI:https://doi.org/10.18311/jbc/2008/3762.