00605nam a22002057a 450000500170000001000110001702000100002803500110003803700160004904000120006508200160007710000210009324500620011426000470017627000140022330000340023750000610027165000410033265000260037320170124110018.0  a102179  c00.00  a102179  bCen Lib/Ret  aDPLbEN  a371.33bSAN  aSands, Lester B.  aAudio-vedio procedures in teaching /cby Lester B. Sands   aNew York bThe Ronald Press Company c1956  bNew York   aviii, 670p. ;c22cm(Hb)bill.  aIncludes appendix, bibliographical references and index   aEducation xCommunication tecnology   aAudio vedio teaching