@book{36829,
	author = {Spencer, Milton H. and Siegelma, Louis Reynolds},
	title = {Managerial economics : desicion making and forward planning},
	publisher = {Illinoi Richard D, Irwin,},
	year = {1964},
	series = {The Irwin Series in Economics},
	address = {Estados Unidos de América :},
	note = {Incluye índice}
}