TY  - RPRT
TI  - Automatic focus control for facsimile camera
AU  - Sinclair, A. R.
AU  - Katzberg, S. J.
AU  - Burcher, E. E.
PY  - 1973
UR  - https://ntrs.nasa.gov/citations/19730000361
ID  - 19730000361
ER  -