00482cam a22001814a 4500003001000000005001700010008004100027020001500068040002500083041000800108044000800116080001700124100001900141245005300160260004900213650001900262655001900281AR-SsjUIB20250710145501.0250429s1980 xxk 000 0 eng d a0435287214 aAR-SsjUIBcAR-SsjUIB0 aeng axxk a802.0-07:0011 aStares, Martin10aCore english for general science teacher's book. aLondon :bHeinemann educational book,c1980. 7aIngleĢs2lemb 7aLibro2unescot