@book{6074,
	author = {National Research Council. Washington. Subcommittee on Swine Nutrition},
	title = {Nutrient requirements of beef cattle},
	publisher = {National Academy Press,},
	year = {1991 [c. 1984]},
	series = {Nutrient requirements of domestic animals},
	address = {Washington, D.C. :},
	edition = {6ed. rev.},
	note = {60-217}
}