00305nam a2200097Ia 4500008004100000082001800041100006100059245003100120264004600151300001000197200526s9999||||xx |||||||||||||| ||und||  a371.912 BES    aBess, Fred H. , Freeman, Barry A. , Sinclair, J. Stephen 0aAmplification in Education  bAlexander Graham Bell Assn for Deafc1981  a388p.