00315nam a2200121Ia 4500020001800000082001900018100002500037245004600062260004800108300002700156500000500183700000500188  a9780521878180  a510.9bC554.NN  aChrisomalis, Stephen  aNumerical notationba comparative history  aCambridgebCambridge University Pressc2010  aix, 486p. Bibl. Index.  a  a