@book{120,
	author = {BEER, FERDINAND P. and JOHNSTON, E. RUSSELL.},
	title = {MECANICA VECTORIAL PARA INGENIEROS/ },
	publisher = {MCGRAW-HILL},
	year = {1979},
	address = {MEXICO: },
	edition = {3},
	note = {CONTENIDO: V.1 ESTATICA -- V.2 DINAMICA.}
}