TY  - BOOK
AU  - Das Gupta,S.P.
ED  - International Geogrphical Congress
ED  - National Committee for Geography(Calcutta, India),
TI  - Congress proceedings: 21st International Geogrphical Congress 
PY  - 1973///
CY  - Calcutta
PB  - National Committee for Geography
KW  - Cartography
KW  - Congresses
KW  - Geography
ER  -