NGC 2174

La constellation de janvier : les Gemeaux. Not Available
Optical Studies of Internal Velocities of HII Regions Not Available
H II regions of the northern Milky Way: medium-large-field photographic atlas and catalogue. Abstract image available at:http://adsabs.harvard.edu/abs/1976A&AS...25...25D
On the electron temperature in H II regions. Abstract image available at:http://adsabs.harvard.edu/abs/1970A&A.....6..460L
The Interstellar Extinction of Stars in H II Regions Abstract image available at:http://adsabs.harvard.edu/cgi-bin/nph-bib_query?1970ApJ...160..507A&db_key=AST
Catalogue of cometary nebulae discovered on Palomar maps. Not Available

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