TY  - BOOK
AU  - Wright,F.E.
ED  - United States.
TI  - The manufacture of optical glass and of optical systems: a war-time problem
T2  - Its Document
AV  - QC375 .U5
PY  - 1921///
CY  - Washington
PB  - Govt. Print. Off.
KW  - Optical industry
KW  - Optical glass
ER  -