TY  - BOOK
AU  - Ratzel, Friedrick.
TI  - History of Mankind, vol.1 / 
SN  - 81-7158-085-8
U1  - Y592v 
PY  - 1978///
CY  - Delhi : 
PB  - Akashdeep Publishing House , 
KW  - History of Mankind
ER  -