Crossref Citations
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Aller, Lawrence H.
1984.
Physics of Thermal Gaseous Nebulae.
Vol. 112,
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p.
222.
Published online by Cambridge University Press: 18 September 2017
HI observations at 21 cm have been made with the Westerbork Synthesis Radio Telescope in the direction of six planetary nebulae located in or near the galactic plane (N 7027, 2440, 6537, 6572, 7026, 7354).