Ratzan, Lee. <br/><br/>
Understanding information systems  what they do and why we need them 
Lee Ratzan. 
 - Chicago  American Library Association  2004. 
 - xvi, 253 p.  ill.  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/>Describing information -- Representing information -- Organizing information -- Retrieving information -- Networking information -- Securing information -- Concealing information -- Measuring information -- Counting information -- Numbering information -- Managing information -- The computer as an information system -- The Internet as an information system -- Music as an information system -- Counter-intuitive information. 
<br/><br/><label>ISBN: </label>0838908683(hardcover)  52.20 
<br/><br/><label>LCCN: </label>2003021878 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information science<br/>Mathematics--Popular works.<br/>Computer science--Popular works.<br/>Information storage and retrieval systems
<br/><br/><label>LC Class. No.: </label>Z665  / .R366 2004 
<br/><br/><label>Dewey Class. No.: </label>020