00541nam a2200193Ia 450000500170000000800410001724500820005810000170014026000540015730000180021130000110022949000260024002000180026605000160028454600120030033600090031233700150032133800110033620260803094024.0251212s2004    xx            000 0 und d1 aScholastic 40 cross-number puzzles : baddition & subtraction /cBob Olenych.  aOlenych, Bob  aNew York :bScholastic Teaching Resources,c2004.  a48 p. : ill.:  c27 cm.  aScholastic grades 4-6  a0-439-51904-7  a793.74 Ol25  aEnglish  aText  aUnmediated  aVolume