@book{172833,
	author = {Konopka, Gisela.},
	title = {Trabajo social de grupo.},
	publisher = {La Editorial Católica},
	year = {1968.},
	series = {Colección Asistencia Social. Serie textos (13,5 x 21).},
	address = {Madrid},
	note = {Translation of : Social group work : a helping process.}
}