000 00498nam a2200169 a 4500
003 AR-LpUBP
005 20231114190643.0
007 ta
008 091002s1947 xxu g 000 0 eng d
040 _aAR-LpUBP
_bspa
_cAR-LpUBP
100 1 _aSutherland, Mary Ethel
_9106324
245 1 0 _aOne-step Problem Patterns and Their Relation to Problem Solving in Arithmetic
260 _aNew York :
_bColumbia University,
_c1947.
300 _a170 p. ;
_c18 cm.
942 _cBK
999 _c159078
_d159078
988 _c