NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-08-19 T18:05:38 PDT
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For refcode 1970ApJ...159..809P:
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Ap.J.
1970 vol. 159 p. 809
Peimbert, M., & Spinrad, H.
The abundance ratio of Helium to Hydrogen in Extragalactic Nebulae
Retrieve 10 NED objects in this reference.
Please click here for ADS abstract

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