Black,Gerald R. <br/><br/>
Keyword patent searchingg-online: a workbook 
/ by Gerald R.Black 
 - [s.n]  [s.i]  2002 
 - 109p. 
<br/><br/><label>ISBN: </label>256121 
<br/><br/><label>Dewey Class. No.: </label>608  / BLA