TY  - BOOK
AU  - Copi,Irving M.
AU  - Cohen,Carol
TI  - Introduction to logic
SN  - 8120309421
AV  - BC108  .C69 1994
U1  - 160  22nd ed.
PY  - 1994///
CY  - New Delhi
PB  - Prentice-Hall of India
KW  - Logic
N1  - Includes bibliographical references and index
ER  -