00846pam a2200265 a 45000010008000000030004000080050017000120080041000290100017000700200015000870400023001020500026001250600017001510820026001681000023001942450063002172500012002802600045002923000033003375040064003706500035004346500047004696500043005167000021005592942194OSt20191203165351.0900920s1991    mdua     b    001 0 eng c  a   90013107   a0683065742  aDNLM/DLCcDLCdDLC00aRF291.5.C45bN67 1991  aWV 271 N874h00a618.920 978 NOR D2231 aNorthern, Jerry L.10aHearing in children /cJerry L. Northern, Marion P. Downs.  a4th ed.  aBaltimore :bWilliams & Wilkins,cc1991.  axi, 418 p. :bill. ;c26 cm.  aIncludes bibliographical references (p. 377-409) and index. 0aHearing disorders in children. 2aHearing Disordersxin infancy & childhood. 2aHearing Testsxin infancy & childhood.1 aDowns, Marion P.