Col Reference --- --------- R1 Hoag A.A., et al. 1961, Publ. US. Nav. Obs. 17,347 (pe) R2 Hoag A.A., et al. 1961, Publ. US. Nav. Obs. 17,347 (pg) Back to the form
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R1 Hoag A.A., et al. 1961, Publ. US. Nav. Obs. 17,347 (pe)
R2 Hoag A.A., et al. 1961, Publ. US. Nav. Obs. 17,347 (pg)