TY  - BOOK
AU  - Marx, Karl
AU  - Dobb, Maurice
AU  - Ryazanskaya, S. W.
TI  - Contribution to the critique of political economy
U1  - 335.4 
PY  - 1970///
CY  - Moscow
PB  - Progress Publishers
N1  - "Translated from the German by S. W. Ryazanskaya"
ER  -