TY  - BOOK
AU  - Rodgers,Nancy
TI  - Learning to reason: an introduction to logic, sets and relations 
SN  - 047137122X :
U1  - 511.3 
PY  - 2000///
CY  - New York
PB  - Wiley
KW  - Logic, Symbolic and mathematical
KW  - Proof theory
KW  - Set theory
N1  - Includes bibliographical references and index
ER  -