TY  - BOOK
AU  - Frs, F. Twyman
TI  - Prism and lens making: a textbook for optical glassworkers
SN  - 9780852741504
U1  - 681.42 
PY  - 1988///
CY  - Boca Raton
PB  - Taylor & Francis
KW  - Lenses
ER  -