@book{713,
	author = {Rojas Osorio, Carlos,},
	title = {El problema de la causalidad en la epistemología de Mario Bunge},
	publisher = {(s.n)},
	year = {1981.},
	address = {Ponce, PR},
	note = {Tesis (Ph.D)-Pontificia Universidad Javeriana. Repúplica de Colombia.}
}