000 00511nam a2200169 a 4500
005 20140412111244.0
008 010328s19uu xx 00 eng d
020 _a0-590-30171-3
050 _aTR(GS 510
_bS94 1980
100 _aStudebaker, Gordon
245 _aAdd or subtract :
_bcomputational skills C /
_cby Gordon Studebaker and John W. Studebaker.
260 _aNew York :
_bScholastic Inc,
_c1980.
300 _a32 p.
440 _aA Scholastic Skills Book
650 _aMathematics
999 _c102878
_d102878