TY  - RPRT
TI  - A new objective for the Allegheny Observatory 30-inch refractor
AU  - Gatewood, G. D.
AU  - De Jonge, J. K.
AU  - Stein, J.
AU  - Difatta, C.
PY  - 1985
UR  - https://ntrs.nasa.gov/citations/19860053395
ID  - 19860053395
ER  -