Elements of systems analysis and design. 

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 - New Delhi  Indira Gandhi National Open University  1994 
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<br/><br/><label>ISBN: </label>8172636512 
<br/><br/><label>Subjects--Topical Terms: </label><br/>System Analysis & Design
<br/><br/><label>Dewey Class. No.: </label>004.21 IGNO