Safety of foods: an international symposia on the safety and importance of foods in the western hemisphere held at the University of PuertoRico

by Ayres, J C
Published 1968

Elementary analysis : the theory of calculus /

by Ross, Kenneth A.
Published 2013

Family and fertility in Puerto Rico: a study of the lower income group/

by Stycos, J Mayone
Published 1955

The family and population control: a Puerto Rican experiment in social change/

by Hill, Reuben
Published 1959