TY  - BOOK
AU  - Welsh D J A
TI  - Complexity: knots, colourings and counting
SN  - 0-521-45740-8
U1  - 514.224 
PY  - 1993///
CY  - Cambridge
PB  - CUP
KW  - Classical combinatorics
KW  - Knot theory
KW  - Statistical physics
ER  -