The rural land classification program of Puerto Rico.

MLA

Northwestern University (Evanston, Ill.). The rural land classification program of Puerto Rico. Evanston, Ill., [publisher not identified], 1952.

APA

Northwestern University (Evanston, I. (1952). The rural land classification program of Puerto Rico. Evanston, Ill., [publisher not identified].

Chicago

Northwestern University (Evanston, Ill.). The rural land classification program of Puerto Rico. Evanston, Ill., [publisher not identified], 1952.