SIMBAD references

1951BHarO.920...32M - Harvard Bull., 920, 32-37 (1951)

New peculiar spectra.

MAYALL M.W.

Journal keyword(s):

Nomenclature: Table I: [M51] NNN (Nos 1-139) = PN My NN for (Nos 45, 47, 48, 56, 59, 60).

Simbad objects: 140

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