TY  - BOOK
AU  - Mansfield,George Rogers
TI  - ...Phosphate resources of Florida,
T2  - U. S. Geological survey.  Bulletin 934
AV  - QE75 .B9 no. 934
PY  - 1942///
CY  - Washington
PB  - U.S. Govt. print off.
KW  - Phosphates
KW  - Florida
N1  - At head of title:  U. S. Dept. of the interior.  Harold L. Ickes, secretary. Geological survey, W. C. Mendenhall, director; Four folded maps are in pocket; Bibliographical foot-notes
ER  -