TY  - BOOK
ED  - Evanston, Ill.  Montana. 
TI  - The rural land classification program of Puerto Rico
PY  - 1952///
CY  - Evanston, Ill. : 
PB  - Northwestern University Press, 
KW  - Agriculture
KW  - Puerto Rico
KW  - Physical geography
N1  -  The William and Marian Haas Research Fund;  Bibliographical footnotes
ER  -