TY  - BOOK
AU  - Quast,W.G.
ED  - Houghton Mifflin and Company
TI  - Houghton mifflin mathematics: teacher΄s resourse book 
SN  - 0395386381
U1  - 372.7 23
PY  - 1987///.
CY  - Boston: 
PB  - Houghton Mifflin, 
KW  - Mathematics
KW  - Study and teaching (Elementary)
ER  -