TY  - BOOK
AU  - Thoman Richard S
AU  -  Corbin Peter B
TI  - Geography of economic activity
T2  - McGraw Hill series in geography
SN  - 0070642079
U1  - U6.1.N6, K8;L4 
PY  - 1974///
CY  - New York
PB  - McGraw Hill U S A     
KW  - Economic Geography
N1  - Bib p. 403-08
ER  -