00333    a2200133   4500020001500000082001300015100002200028245002200050260005000072300002100122650001600143700002100159700001900180  a0669102709  a510bRUC  aRucker, Walter E.  aHeath mathematics  aLexingtonbD.C. Heath and Companyc1987g1987  a[iv],396p.c25cm  aMathematics  aDilley, Clyde A.  aLowry, David W