@book{109598,
	author = {Puerto Rico. and Clapp and Mayne, Inc. and Puerto Rico.},
	title = {Ingresos y gastos de las familias, Puerto Rico, 1977},
	publisher = {Negociado de Estadísticas del Trabajo},
	year = {1977-},
	address = {San Juan, P.R.},
	note = {Study sponsored by the Bureau of Labor Statistics of the Department of Labor and Human Resources and conducted by Clapp and Mayne, Inc., consulting firm of Puerto Rico.}
}