00622cam a22002294a 4500003001000000005001700010008004100027020001500068040002500083041000800108044000800116080001300124100001800137245003800155260003900193300002400232490004800256504003300304650001900337655001900356700001700375AR-SsjUIB20250710164149.0250429s1977    xxk           000 0 eng d  a0194371255  aAR-SsjUIBcAR-SsjUIB0 aeng  axxk  a802.0-071 aAllen, J.P.B.10aTesting and experimental methods.  aLondon :bUniversity Press,c1977.  a233 p. :bil. 23 cm0 aThe edinburgh course in applied linguistics  aBibliografía en p.224-226. 7aInglés2lemb 7aLibro2unescot1 aDavies, Alan