Pickworth, Charles N <br/><br/>
The slide rule 
C.N Pickworth 
 - 24th  
 - London  Great Britain 
 - 126 P. :  ill. ;  8 cm 
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<br/><br/><label>Subjects--Topical Terms: </label><br/>MCE
<br/><br/><label>Dewey Class. No.: </label>510.28  / PIC