@book{109617,
	author = {Collazo Collazo, Jenaro, and Ríos Ruíz, José Mariano.},
	title = {Development of a level-of-living scale for Puerto Rican rural families},
	publisher = {University of Puerto Rico, Agricultural Experiment Station},
	year = {1960.},
	series = {Bulletin / University of Puerto Rico. Agricultural Experiment Station},
	address = {Río Piedras, Puerto Rico},
	note = {Includes English and Spanish summaries.}
}