TY  - BOOK
AU  - Johnsonbaugh, Richard
TI  - Discrete mathematics, 4th ed. / Richard Johnsonbaugh
SN  - 0135182425
U1  - 510 JOH 
CY  - London:Prentice- Hall, c 1997
KW  - Mathematics  2. Conputer Science -Mathematics
ER  -