TY  - RPRT
TI  - Infrared-line emission from planetary nebulae.
AU  - Delmer, T. N.
AU  - Gould, R. J.
AU  - Ramsay, W.
PY  - 1967
UR  - https://ntrs.nasa.gov/citations/19670063082
ID  - 19670063082
ER  -