Lang, Johannes G  1978 <br/><br/>
The magnetic field /  [textbook] 
by Johannes G. Lang 
 - London :   Heyden,   1978. 
 - 67 pages :   illustrations ;  
 - 	Programmed instruction, 3. .
<br/><br/> includes appendix 
<br/><br/><label>ISBN: </label>3800940078 
<br/><br/><label>Subjects--Topical Terms: </label><br/> 	     Magnetic fields
<br/><br/><label>LC Class. No.: </label>QC793.3M3  / LAN