TY  - GEN
AU  - Penner,R.C.
TI  - Discrete mathematics: proof techniques and mathematical structures 
SN  - 9789810240882
U1  - 511.1 
PY  - 2001///
CY  - Singapore
PB  - World Scientific
KW  - Mathematical structures, Discrete
KW  - Discrete mathematics
N1  - Includes bibliographical references and index
ER  -