00421nam a2200133Ia 4500008004100000020001800041082001800059100001500077245005800092260002900150300001500179490003700194500005600231240112b        |||||||| |||| 00| 0 eng d  a9789812839497  a511.6bZ63.CP  aZhang, Yao  aCombinatorial problems in Mathematical competitions /  aChina:bWspc/ecnu,c2011  axii, 289p.  aMathematical Olympiad series ; 4  a"Purchased under NBHM grant for the year 2011-2012"