Emmanuel Bassey Effa, Donatus F. Uwah and Donald A. Ukeh
American Journal of Plant Physiology 6 ( 6 ): 304 - 311 , 2011
Ene E. Oku, Donald A. Ukeh and Nsa E. Dada
International Journal of Zoological Research 7 ( 3 ): 279 - 285 , 2011
Donald A. Ukeh, Gabriel A. Arong and Emmanuel I. Ogban
Journal of Entomology 5 ( 4 ): 295 - 299 , 2008