@book{90476,
	author = {National Research Council. Washington. Subcommittee on Swine Nutrition},
	title = {Nutrient requirements of beef cattle},
	publisher = {National Academy Press,},
	year = {1996.},
	series = {Nutrient requirements of domestic animals},
	address = {Washington, D. C. :},
	edition = {7 ed.}
}