00460cam a2200133 a 4500008004100000020001500041100001800056245009100074260004300165300002700208650004800235700002200283050002100305980601s1999    maua     b    001 0 eng    a06632359281 aSobel, Max A.10aEssentials of mathematics4 :bSkills and Concept /cMax A. Sobel and Evan M. Maletsky.  aNew Jersey :bGinn and, companycc1973  aviii, 500 p. :bill. ; 0aMathematicsxStudy and teaching (Secondary)1 aMaletsky, Evan M.00aQA11b.S663 1999