Morphometry and biology of tholymis tillarga ( fabricius) Anisopetera : libellulidae and effects of some common pesticides on its larvae / Syeda Ruhena Ahsan. [M.Phil Thesis] Ruhena Ahsan, Syeda. Cell anatomy, morphology, biophysics, culture. 571.63 AHM Thesis (PhD)--Department of Zoology, University of Dhaka, Includes bibliographical references. Dhaka : University of Dhaka , 2007. 2007. 2007 Text xi, 137p. : eng