HAVINGA, E., (e.a.). Planetarium-boek Eise Eisinga. Arnh., 1928. W. ill. 4°. Ocl. -- F.R. STEPHENSON. Historical eclipses and earth's rotation. (1997). Obrds. -- GALILEO GALILEI. Dialogue concerning the two chief world systems. Transl. by S. Drake. Foreword by A. Einstein. 1953. Ocl. w. dust-j. -- R.S. WESTMAN, ed. The Copernican achievement. 1975. Ocl. -- And 1 o. (5).