Tyagi, A.K. and Khan, M.A. 1993. Infestation of <I>Pygaera cupreata</I> Butler (Lepidoptera: Notodontidae) on Different Clones of Poplar in Tarai Region of U.p. and its Multiple Egg Parasitization. Indian Forester. 119, 1 (Jan. 1993), 63–70. DOI:https://doi.org/10.36808/if/1993/v119i1/7948.