TY  - BOOK
AU  - Margaret. F Willerding
AU  -  Stephen Hoffman, 
TI  - College algebra and trigonometry
U1  - 512.13 
PY  - 1971///
CY  - New York
PB  - John Wiley and Sons Inc
N1  - Margaret. F Willerding & Stephen Hoffman: College algebra and trigonometry.  New York.  John Wiley and Sons Inc, 1971.--(512.13WIL)
ER  -