TY  - BOOK
AU  - Ruud, Warren L.
AU  - Shell, Terry L.
TI  - Prelude to calculus
SN  - 0534102905
U1  - GC 510 R94 1990 
PY  - 1990///
CY  - CA
PB  - Wadsworth Pub.
KW  - Mathematics
N1  - Includes index
ER  -