Rogers, Sherman. <br/><br/>
Foremen! Spark plugs or grounded wires / 
By Sherman Rogers. 
 - [Chicago, Ill.?] :  The author,  c1922. 
 - [1] leaf of plates, 32 p. :  port. ;  20 cm. 
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<br/><br/><label>LCCN: </label>ca 29000629  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Supervisors, Industrial.<br/>Leadership.
<br/><br/><label>LC Class. No.: </label>TS155  / .R6