00302    a2200121   4500020001500000082001300015100002200028245002200050260005000072300002100122650001600143700002100159  a0669034274  a510bRUC  aRucker, Walter E.  aHeath mathematics  aLexingtonbD.C. Heath and Companyc1979g1981  a[iv],380p.c25cm  aMathematics  aDilley, Clyde A.