00411nam a22001457a 4500020001800000100001900018245006800037250001400105260004000119300001300159490003300172650001700205650001800222700002500240  a9789349750715  aMoore, Emily H  aDifference sets: connecting algebra, combinatorics and geometry  aVolume 67  aTelanganabUniversities pressc2013  axiii+298  aStudent mathematical library  aGroup theory  aFinite groups  aPollatsek, Harriet S