Boehm Klaus <br/><br/>
British patent system 

 - Cabridge  Cambridge University Press London       1967 
 - x,184p  cm. 
<br/><br/><label>Standard No.: </label>24,453 
<br/><br/><label>Source: </label> Reports / Technical Reports 
<br/><br/><label>Dewey Class. No.: </label>Z3,2673, K7