TY  - RPRT
TI  - A spectral difference between silicates in Comet Halley and interstellar silicates
AU  - Campins, Humberto
AU  - Ryan, Eileen V.
PY  - 1989
UR  - https://ntrs.nasa.gov/citations/19910005689
ID  - 19910005689
ER  -