TY  - BOOK
AU  - Dobyns, Roy A.
TI  - A programmed guide to fundamentals of algebra and trigonometry
SN  - 871501295
U1  - 512DOB 21
PY  - 1971///
CY  - Massachusetts
PB  - Prindle, Weber & Schmidt, Incorporated
KW  - Trigonometry
KW  - Mathematics
ER  -