TY  - BOOK
AU  - Johnston, C. L.
AU  - Willis, Alden T.;Hughes, Gale M.
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 2
PY  - 1991///];copyright 199146
CY  - Belmont, Calif.
PB  - Wadsworth Publishing
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - Algebra
N1  - Includes index; 5
ER  -