00401nam a2200133Ia 4500020001800000082002000018100003900038245007300077260005200150300002700202490000500229500000500234700002800239  a9780821887257  a510.9bSa169.VD  aSally, Judith D.and Sally, Paul J.  aRoots to research; a vertical development of mathematical problemsb  aProvidencebAmerican Mathematical Societyc2007  axiii,338p. Bibl. Index  a  a  aSally, Paul J. Jt.auth.