TY  - BOOK
AU  - Howes, Vernon E.
TI  - Essentials of mathematics : precalculus , a programmed text
SN  - 0471417378
PY  - 1975///
CY  - New York
PB  - John Wiley and Sons
KW  - Mathematics
KW  - 1961-
KW  - Programmed instruction
N1  - Contents: book 1. Algebra and functions.-  book 2.  Algebra And Fuctions.-  Book 3.  Trigonometric functions and applications
ER  -