@book{18221,
	author = {Pohlman, Edward and Pohlman, Julia Mae},
	title = {Psicología de la planificación familiar},
	publisher = {Editorial Pax-México},
	year = {1969.},
	series = {Colección Ecología},
	address = {México},
	note = {Translation of : The psychology of birth planning.}
}