TY  - BOOK
AU  - Ducasse,Curt John
AU  - Tomas,Vincent
TI  - Causation and the types of necessity / 
T2  - Dover books on philosophy
U1  - 122 
PY  - 1969///
CY  - New York
PB  - Dover, 
KW  - Philosophy
KW  - Causality
ER  -