TY  - BOOK
AU  - DUBEY R N
AU  -  SINGH L R Ed.
TI  - Economic and commercial geography
U1  - "U6.1.N7, K4;L9" 
PY  - 1979///
CY  - Allahabad
PB  - Kitab Mahal India     
KW  - Economic Geography
N1  - Revised  and Enlarged by L R Singh
ER  -