Levin, Edith M. The penetrating beam : : reflections on light / [electronic resource] / by Edith M. Levin.. — 1st ed.. — New York : : Richards Rosen Press,, 1978.. — vi, 115 p. : : ill. ; 22 cm. — (Student scientist series). Bibliography: p. 113-115. ISBN: 0823904164 : $7.97 9780823904167 LCCN: 78007403 Subjects--Topical Terms: Light.Licht. LC Class. No.: QC355.2 / .L48 Dewey Class. No.: 535