Proctor, Richard Anthony Studies of Venus-Transits. an Investigation of the Circumstances of the Transits of Venus in 1874 and 1882 Originally Forming Part of 'the Universe and Coming Transits.'

Studies of Venus-Transits. an Investigation of the Circumstances of the Transits of Venus in 1874 and 1882 Originally Forming Part of 'the Universe and Coming Transits.'