TY  - BOOK
AU  - Thoman Richard S
TI  - Geography of economic activity
T2  - McGraw Hill series in goegraphy
U1  - U6.1.N6, K8 
PY  - 1968///
CY  - New York
PB  - McGraw Hill U S A     
KW  - Economic Geography
N1  - Appendix p. 515-38
ER  -