@book{60062,
	author = {Abd El Aziz, M. I. and El Shazly, K. A.},
	title = {The effect of tilmicosin and apramycin alone or together in treatment of experimentally infected chickens with Mycoplasma Gallisepticum only or with Escherichia coli},
	url = {http://nile.enal.sci.eg/EALE/2014/KVMJ/1214/1/139.pdf}
}