TY  - BOOK
AU  - Johnston, C. L. 
TI  - Developmental mathematics / C.L. Johnston, Aldene T. Willis, Gale M. Hughes.- 3rd ed
SN  - 0534142087
U1  - 512.9 JOH 
CY  - Belmont, Calif. : Wadsworth Pub. Co., c1991.
KW  - Algebra
ER  -