@article {147406,
	title = {Effect of ammonia and E. coli complication on the immune response of chickens against  Avian Pneumovirus.},
	journal = {Zag. Vet. J.},
	volume = {27},
	year = {1999},
	author = {M.M. Amer and M. A.E.S. Shakal and El-Ebiary, EA and K.B. Abd-Rabo}
}
