00535nam a2200169Ia 4500001000700000003000500007005001700012008004100029050002200070100003300092245007100125260003300196300001100229500005100240650003600291700003800327198126BIBL20160527192912.0920512s1954||||mx a   |||||||00110|spa|d00aLB1043b.M35 195410aMcKown, Harry Charles2Local10aEducación audio-visualcpor Harry C. McKnown y Alvin B. Roberts.0 aMéxicobU.T.E.H.A.cc1954.  a581 p.  aIncludes bibliographical references and index. 0aAudioxVisual education.2Local10aRoberts, Alvin B., jt. au.2Local