Mathematical Discovery On Understanding, Learning, and Teaching Problem Solving [2 Volumes]
New York: John Wiley & Sons, Inc. Mixed Editions. Octavo; VG-/G; white/black spines with white text; 2 volumes: vol. 1, pp 216; 1962; vol. 2, pp 191, 1965; dust jackets have slight rubbing to exteriors; minor chips to edges; cloths show minimal exterior wear; strong boards; text block exterior edges have light tone; previous owner's bookplates to front pastedowns; mild foxing to first and last few pages; tight bindings; illustrated. More