TY  - BOOK
AU  - Krulik, Stephen.
AU  - Rudnick, Jesse A.
TI  - Problem solving :a handbook for teachers
SN  - 0205068472
AV  - QA63.K78 
PB  - Allyn and Bacon
KW  - Problem solving
KW  - QA
N1  - Bibliography: p. 117-118
ER  -