TY  - BOOK
AU  - Schipper,Edith Watson
AU  - Schuh,Edward
TI  - A first course in modern logic
U1  - 164 
PY  - 1959///
CY  - London
PB  - Routledge & Kegan Paul
KW  - Logic, Symbolic and mathematical
N1  - Includes index
ER  -