Drum Armatures And Commutators, Theory A
A Complete Treatise on the Theory and Construction of Drum Winding, and of Commutators for Closed-Coil Armatures, Together with a Full R Sum of Some of the P... »

Drum Armatures and Commutators, Theory and Practice
a Complete Treatise on the Theory and Construction of Drum Winding, and of Commutators for Closed-coil Armatures, Together With a Full Resume of Some of the ... »

Drum Armatures And Commutators (theory And Practice); Enl. And Rev. From A Series Of Articles In The Electrician
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Drum Armatures and Commutators, Theory and Practice; a Complete Treatise on the Theory and Construction of Drum Winding, and of Commutators For
 »