El Zoheiry, A., and J. Sorour. 1993. Ultrastructural studies on the defensive pygidial glands of Blaps polychresta (Coleoptera: Tenebrionidae. Journal of the Egyptian German Society of Zoology 12:115-133.
El Zoheiry, A., and J. Sorour. 1993. Ultrastructural studies on the defensive pygidial glands of Blaps polychresta (Coleoptera: Tenebrionidae. Journal of the Egyptian German Society of Zoology 12:115-133.