TY  - BOOK
AU  - Johnston, C. L. 
TI  - Essential algebra. / C.L. Johnston, Alden T. Willis, Jeanne Lazaris.- 6th ed
SN  - 0534140041
U1  - 512 JOH 
CY  - Belmont, Calif. : Wadsworth Pub. Co., c1991.
KW  - Algebra
ER  -