TY  - BOOK
AU  - Behr,Merlyn J.(Merlyn James)
AU  - Jungst,Dale G.(Dale Gene)
TI  - Fundamentals of elementary mathematics: number systems and algebra 
SN  - 0120847507
PY  - 1971///
CY  - New York
PB  - Academic Press
KW  - Arithmetic
KW  - Foundations
N1  - With answers and suggestions for selected exercises
ER  -