00326nam a2200133Ia 4500020001800000082001900018100001900037245004300056250000800099260005200107300002300159500000500182700000500187  a9780821887080  a511.6bL896.CP  aLovasz, Laszlo  aCombinatorial problems and exercisesb  a2nd  aProvidencebAmerican Mathematical Societyc2012  a639p. Bibl. Index.  a  a