TY  - BOOK
AU  - Leibniz,Gottfried Wilhelm
AU  - Parkinson,G.H.R.
TI  - Logical papers
U1  - 160.8 
PY  - 1966///
CY  - Oxford
PB  - Clarendon Press
KW  - Logic, Symbolic and mathematical
N1  - Includes index
ER  -