Efron, Alexander, 1897-
Light. - New York, J.F. Rider [1958] - 127 p. illus. 22 cm. - A Rider publication, Basic science series no. 200-4. . - Basic science series (New York, N.Y.) .
1969 ed. published under title: Exploring light.
58010327
Light.
QC357 / .E32
535
Light. - New York, J.F. Rider [1958] - 127 p. illus. 22 cm. - A Rider publication, Basic science series no. 200-4. . - Basic science series (New York, N.Y.) .
1969 ed. published under title: Exploring light.
58010327
Light.
QC357 / .E32
535