00987cam a22003011  45000010008000000030008000080050017000160080041000330100017000740350018000910400034001090420012001430500017001550820013001721000034001852450081002192500012003002600043003123000045003554900043004005040026004436500034004696500012005036500039005157000046005547000045006008300040006456006248BD-DhUL20140817181155.0730727s1947    nyua     b    000 0 eng    a   47005168   a(OCoLC)665086  aDLCcOAUdOCoLCdDLCdBD-DhUL  apremarc00aTK6500b.P65  a414bPOV1 aPotter, Ralph Kimball,d1894-10aVisible speechc[by] Ralph K. Potter, George A. Kopp [and] Harriet C. Green.  a1st ed.  aNew York,bD. Van Nostrand Co.,c1947.  axvi, 441 p. :billus., diagrs. ;c28 cm.1 aThe Bell Telephone Laboratories series  aBibliography: p. 430. 0aDeafxMeans of communication. 0aSpeech. 0aTelephonexEquipment and supplies.1 aKopp, George Adams,d1900-ejoint author.1 aGreen, Harriet C.,d1917-ejoint author. 0aBell Telephone Laboratories series.