{ "item_title" : "Polyphase Commutator Machines", "item_author" : [" B. Adkins", "W. J. Gibbs "], "item_description" : "This book was first published in 1951 and was written by designers of polyphase commutator machines for students, and for engineers interested in their application. It is primarily a practical book; it describes the most important methods of control and the characteristics obtained. Theory is dealt with in separate sections, and may be omitted at will by some readers.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/0/52/123/351/0521233518_b.jpg", "price_data" : { "retail_price" : "49.00", "online_price" : "49.00", "our_price" : "49.00", "club_price" : "49.00", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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