00812cam a22002411 4500 e 42000289 DLC 20260227111231.0 821213s1941 dcua 000 0 eng e 42000289 (OCoLC)16764201 DLC OrPS DLC premarc LB1103 .S6 vol. 6, no. 3 Ciocco, Antonio, 1908- The hearing of school children, a statistical study of audio-metric and clinical reports, Washington, D.C., Society for research in child development, National research council, 1941. v, 77 p. incl. tables, diagrs. 23 cm. Hearing. Deafness. School children. Palmer, Carroll E. (Carroll Edwards), 1903, joint author. 21890 21890