00332nam 2206796 45000010005000000030023000050050009000280080041000370820008000781000021000862600035001073000015001422450043001576796StarLibrary Marc Built20180420201711 ||||| |||||||||||amh  a510 aRichard R. Skemp bNew York: Penguin Books c1971 a319p: 18cm aThe Psychology of Learning Mathematics