Biology, nature of infestation and mechanical control of the Aphid, Aphis gossypii glover (Hemiptera : Aphididae) on Arum plant, Colocasia esculenta / [MS Thesis] Aphids 595.752 BIO Thesis (M S) -- Dept. of Zoology, University of Dhaka, 2009-2010 Includes bibliographical references Dhaka : University of Dhaka, 2012. 2012. 2012 Text [3], v, 50 p. : eng