Blum, Henrik L. Vision screening for elementary schools the Orinda study by Henrik L. Blum, Henry B. Peters [and] Jerome W. Bettman. - Berkeley, California Univ. of California Press 1959. - x, 146 p. ill. LCCN: 59010462 Subjects--Topical Terms: Vision--Testing. Subjects--Geographic Terms: Orinda (Calif.)--Public schools. LC Class. No.: LB3451 / .B5 Dewey Class. No.: 371.72 National Library of Medicine Call No.: WW 145 / B658v 1959