00357nam a2200133Ia 4500020001800000082001900018100002300037245002800060260005200088300002800140490004500168500000500213700000500218  a9780821887202  a512.7bG383.BQ  aGerstein, Larry J.  aBasic quadratic formsb  aProvidencebAmerican Mathematical Societyc2012  axiii, 255p. Bibl. Index  aGraduate studies in Mathematics v V. 90  a  a