TY  - BOOK
AU  - Balakrishnan,VK,
TI  - Combinatorics: including concepts of graph theory 
SN  - 9780070035751
U1  - 511 
PY  - 1995///
CY  - New Delhi
PB  - Tata Mcgraw-Hill Publishing Company Ltd
KW  - General principles of mathematics
ER  -