TY  - BOOK
AU  - Platt,Robert Swanton
TI  - Field study in America geography : : the development of theory and method exemplifed by selections / 
U1  - 91 CHI 
PY  - 1959///
CY  - Chicago : 
PB  - University of Chicago, 
KW  - Geography
KW  - Study and teaching
KW  - U. S
ER  -