@book{94564,
	author = {Tugwell, Rexford Guy and Padilla, Salvador M. and Puerto Rico. Universidad. Recinto de Río Piedras. Escuela Graduada de Planificación.},
	title = {Tugwell's Thoughts on planning},
	publisher = {University of Puerto Rico Press},
	year = {1975.},
	address = {Río Piedras, P.R.},
	note = {At head of title : Graduate School of Planning. University of Puerto Rico}
}