00446cam a22001694a 4500003001000000005001700010008004100027020001400068040002500082041000800107044000800115080001300123245005600136260004600192650001900238655001900257AR-SsjUIB20250710145500.0250429s1980 xxk 000 0 eng d a019453513 aAR-SsjUIBcAR-SsjUIB0 aeng axxk a802.0-0700aReading and thinking in english :bConcepts in use. aOxford :bOxford University Press,c1980. 7aIngleĢs2lemb 7aLibro2unescot