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1990MNRAS.244p...4F - Mon. Not. R. Astron. Soc., 244, part no 16, 4-8 (1990)
The (j,k) = (3,3) inversion line of NH3 - a possible interstellar chronometer.
FLOWER D.R., OFFER A. and SCHILKE P.
Journal keyword(s):
Simbad objects: 2
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