TY  - BOOK
AU  - International Symposium on Combinatorial Mathematics, Colorado, 1971
AU  - Srivastava, Jagadish N., ed. [et al].
TI  - Survey of combinatorial theory
SN  - 0720422620
U1  - 511.6 
PY  - 1973///
CY  - Amsterdam
PB  - North-Holland Pub.Co.
ER  -