Callahan, Mike   <br/><br/>
Dr. File Finder's Guide to Shareware 

 - New York,  McGraw-Hill,  1990, 
 - xxxii, 1119p.  25cm. 
<br/><br/><label>ISBN: </label>9780078816468 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Official Guide<br/>Shareware
<br/><br/><label>Dewey Class. No.: </label>518  / CAL