Russian

Rzhevkin, S.N.Hearing and speech in the light of modern physical research.- 2nd ed., Refined.and add.-Moscow ;Leningrad: United scientific-techno.Publishing House of the NCTP of the USSR.Ch.Ed.General.lit.and nomography, 1936. -311, [1] p.: il., Count., schemes., table .. -On the region.Publishing House: Onti NCTP of the USSR.Bibliogr.In the tuning.Note .. - Ex.Def.: p.87 erroneously numbered as with.8..1. The people (collection).Electronic copy source: PBOriginal storage: St. Petersburg State University