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100 1 _aLitecky, Charles R.
_94890
245 1 0 _aStructured cobol : a step by step approach
_c/ Charles R.Litecky, Gordon B. Davis.
260 _aNew York :
_bMcGraw-Hill,
_cc1987.
300 _axi, 401p.: ill. ;
_c28cm.
509 _amahbub_51_Document_381.jpg_processed
999 _c64502
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