TY - BOOK AU - Billstein,R. AU - Libeskind,S. AU - Lott, J. W. TI - A problem solving approach to mathematics for elementary school teachers SN - 9780321331793 AV - DUCE QA135.6.B55 PY - 2006/// CY - Boston PB - Pearson N1 - Includes an appendix and index ER -