Dvorine, Israel, 1900- Theory and practice of analytical refraction and orthoptics, by Israel Dvorine...introduction by Emmett Albert Betts... - Baltimore, Md. [Composed and printed at the Waverly press, inc.] 1943. - xiii, 149 p. front. (port.) 23 cm. "Second edition." Bibliography: p. 148-149. LCCN: sg 44000069 Subjects--Topical Terms: Eye--Accommodation and refraction. LC Class. No.: RE925 / .D87 1943 Dewey Class. No.: 617.75