SIMBAD references

1973MmSAI..44...39H - Mem. Soc. Astron. Ital., 44, 39-46 (1973)

A photometric study of the open cluster NGC 7031.

HASSAN S.M. and BARBON R.

Journal keyword(s):

Nomenclature: Table I: Cl* NGC 7031 HB NN (Nos 1-32)

Simbad objects: 32

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