@book{217469,
	author = {Mccaughey, W. P. and Wittenberg, K.},
	title = {Methane production by steers on pasture / W. P. McCaughey; K. Wittenberg; D. Corrigan},
	publisher = {Agricultural Institute of Canada},
	year = {1997},
	address = {Ottawa},
	note = {Separata: Can J An Scs Ottawa : Agricultural Institute of Canada.}
}