ISBN 133301418X books & textbook
Publications of the Washburn Observatory of the University of Wisconsin, Vol. 12: Determinations of Proper Motion, 1902-1907 (Classic Reprint)
Wisconsin University Washburn Observatory
Forgotten Books /2020-04-23 Paperback / 335 Pages
isbn-10: 133301418X / isbn-13: 9781333014186
