Determinations of Stellar Parallax. Based Upon Photographs Taken at the Cambridge Observatory by Arthur R. Hinks and the Writer, With Magnitudes and Spectra Determined at the Harvard College Observatory Under Direction of E.C. Pickering

Determinations of Stellar Parallax. Based Upon Photographs Taken at the Cambridge Observatory by Arthur R. Hinks and the Writer, With Magnitudes and Spectra Determined at the Harvard College Observatory Under Direction of E.C. Pickering