@book{109819,
	author = {Barnes Picó, Gretchen Joanne. and Loyola Lugo, Héctor Luis. and  Pontificia Universidad Católica de Puerto Rico.},
	title = {An empirical investigation of operational planning in small retail food firms in Puerto Rico},
	publisher = {The Authors},
	year = {1988.},
	address = {Ponce, P. R.}
}