The hearing of school children : a statistical study of audiometric and clinical records
by Antonio Ciocco and Carroll E. Palmer
(Monographs of the Society for Research in Child Development, v. 6,
Kraus Reprint Corp., 1966
Originally published by: Washington, D.C. : Society for Research in Child Development, National Research Council, 1941
Includes bibliographical references (p. 73-77)
Kraus Reprint Corp.