000 00509nam a2200169 a 4500
005 20140412111244.0
008 010417s19uu xx 00 eng d
020 _a0-590-30167-5
050 _aTR(GS 513.21
_bC651 1980
100 _aStudebaker, Gordon
245 _aComputational skills A: addition /
_cby Gordon Studebaker and John W. Studebaker.
260 _aNew York :
_bScholastic Inc,
_c1980.
300 _a32p. ; ill.
440 _aScholastic Skills Book
541 _eE3066
650 _aMathematics
999 _c102880
_d102880