TY  - BOOK
ED  - United States
TI  - Optical image evaluation: proceedings of NBS semicentennial symposium on optical image evaluation held at the NBS on October 18, 19, and 20, 1951
T2  - Its Circular 526
AV  - QC100QC381 .U555 no.526.U5
U1  - 535.3 
PY  - 1954///
CY  - Washington
PB  - U. S. Govt. Print. Off.
KW  - Optics, Geometrical
KW  - Local
ER  -