Tyagi, A. K., and M. A. Khan. 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):63-70. https://doi.org/10.36808/if/1993/v119i1/7948.