TY  - BOOK
AU  - Roberts,Ray Carlton
ED  - United States
ED  - University of Puerto Rico Rio Piedras campus
TI  - Soil survey, Puerto Rico ... Department of Agriculture, Bureau of Plant Industry in cooperation with the University of Puerto Rico Agricultural Experiment Station
T2  - United States. Bureau of Plant Industry [Soil survey report] Series 1936, no. 8
AV  - S591 .A22 1936, no.8
U1  - 631.470973 
PY  - 1942///]
CY  - Washington
PB  - [U.S. Govt. Print. Off.
KW  - Soil surveys
KW  - Puerto Rico
KW  - Local
N1  - Cover title; "Literature cited": p. 492-495
ER  -