00561nam a2200181Ia 4500082001900000100002000019245004900039260004800088300002200136490006100158500000500219690000600224700000500230952010300235964001700338921000900355999001500364  a511.5bW461.CK  aWelsh, D. J. A.  aComplexity; knots, colourings and countingb  aCambridgebCambridge University Pressc1993  aviii, 103p. Index  aLondon Mathematical society lecture note seriesv v. 186  a  a   a  001040708GRaISIbISId1998-09-07l0o511.5 W461.CKpG1732r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a8957  c8957d8957