00480cam a22002054a 4500003001000000005001700010008004100027040002500068041000800093044000700101080001300108100001800121245001100139260003400150300001100184650001600195650002400211655001900235700002000254AR-SsjUIB20250716140310.0250429s1977 ag 000 0 spa d aAR-SsjUIBcAR-SsjUIB0 aspa aag a681.3.061 aEkman, Torgil10aCobol. aBuenos Aires:b[s.n.],c1977. a149 p. 7aCobol2lemb 7aInformática2lemb 7aLibro2unescot1 aNilson, Kenneth