TY  - BOOK
AU  - Federn,Karl
TI  - The materialist conception of history: a critical analysis 
U1  - 901.1 
PY  - 1939///
CY  - London
PB  - Macmillan and Co.
KW  - Marx, Karl,
KW  - History
KW  - Philosophy
N1  - includes index
ER  -