Lieber, Lillian R. 1886-1986. The Einstein theory of relativity. - [Lancaster, Pa., The Science press printing company, 1936] - 2 p. l., 73 p. col. front., illus. (part col.) col. plates, diagrs. 22 cm. LCCN: 38030771 LC Class. No.: QC6 .L416 / .L416