@book{37683,
	author = {Mustafá Barbosa, Feisal.},
	title = {Los grupos de presión y el sindicalismo contemporáneo.},
	publisher = {[Editorial Pax]},
	year = {1970.},
	address = {Bogotá},
	note = {Tesis--Pontificia Universidad Javeriana, Bogotá.}
}