TY  - BOOK
AU  - Stoner,Ellen
AU  - Perkins,Patricia
AU  - Ferguson,Roy
TI  - Optical formulas tutorial
SN  - 0750675047
PY  - 2005///
CY  - St. Louis
PB  - Elsevier Butterworth-Heinemann
KW  - Opticianry
KW  - Formulae, receipts, prescriptions
KW  - Problems, exercises, etc
N1  - Previous ed.: 1997
ER  -