Foremen! Spark plugs or grounded wires /
Rogers, Sherman.
Foremen! Spark plugs or grounded wires / By Sherman Rogers. - [Chicago, Ill.?] : The author, c1922. - [1] leaf of plates, 32 p. : port. ; 20 cm.
ca 29000629
Supervisors, Industrial.
Leadership.
TS155 / .R6
Foremen! Spark plugs or grounded wires / By Sherman Rogers. - [Chicago, Ill.?] : The author, c1922. - [1] leaf of plates, 32 p. : port. ; 20 cm.
ca 29000629
Supervisors, Industrial.
Leadership.
TS155 / .R6