TY  - BOOK
AU  - Thomas, Richard S.
AU  - Conkling, Edgar C.
AU  - Yeates, Maurice H.
TI  - The geography of economic activity
U1  - 910.133 THO 
PY  - 1968///
CY  - New York
PB  - McGraw-Hill Book Company
KW  - General geography
KW  - Economic geography
ER  -