Title
The solar rotation in June 1911, from spectrographic observations made with the McClean solar instruments by J. B. Hubrecht, M.A. Under the direction of H. F. Newall, M.A., F.B.S., director of the Solar physics observatory.
Physical Description
3 p. l., 77, [1] p. incl. tables, diagrs. 31 x 25 cm.