TY  - BOOK
AU  - Walter C Langsam and others
AU  - Mitchell, Otis C 
TI  - World Since 1919
SN  - 812293886
U1  - 909 23
PY  - 2015///
CY  - Delhi
PB  - Surjeet  Publications
KW  -  History
KW  - History-World
ER  -