World patent information 

 -  1980 
 - 144p 
 - Patent information International patent classification Patent specifications 
<br/><br/> International Journal for Patent Information and Documentation Vol.2 No.1 Jan.1980 
<br/><br/><label>Nat. Bib. No.: </label>4067 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>608.3(082) WOR 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Engineering & Technology
<br/><br/><label>Universal Decimal Class. No.: </label>608.3(082)