TY  - BOOK
AU  - Helton, Floyd Franklin,
AU  - Lial, Margaret L.
TI  - Precalculus mathematics: a functions approach
SN  - 0673155072
PY  - 1983///
CY  - Glenview, Ill.
PB  - Scott, Foresman
KW  - Functions
KW  - Mathematics
KW  - Precalculus
N1  - Includes index
ER  -