00481nam a2200169Ia 4500003000900000008004100009020001800050040001600068080001200084100001600096245008700112260003900199300001400238650001600252650002200268700002100290IN-BaIIA211028s9999    xx            000 0 eng d  a0-285-62916-6  cIIA Library  a51bCUL  aCutler, Ann 4aThe Trachtenberg speed system of basic mathematicscAnn Cutler and Rudolph McShane  aNew DelhibRupa Publicationsc2001  aix, 270p.  aMathematics  aMental arithmetic  aMcShane, Rudolph