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Welcome to P K Kelkar Library, Online Public Access Catalogue (OPAC)

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1.
CARRIER TELEPHONE SYSTEMS APPLICATION TO RAILROAD CIRCUITS

by Affel,H A.

Material type: book Book Description: 12.Publisher: 1937Availability: No items available Damaged (1).

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2.
USE OF TELEPHONE REPEATERS WITH TRAIN DISPATCHING AND MESSAGE CIRCUITS

by Affel,H A.

Material type: book Book Description: 14.Publisher: Electrochemical Society, Usa 1932Availability: No items available Damaged (1).

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3.
A TWELVE-CHANNEL CARRIER TELEPHONE SYSTEM FOR OPEN-WIRE LINES

by Kendall,B W | Affel,H A.

Material type: book Book Publisher: 1939Availability: No items available Damaged (1).

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4.
TRANSMITTED FREQUENCY RANGE FOR CIRCUITS IN BROAD-NAND SYSTEMS :

by AFFEL,H A.

Material type: book Book; Format: print ; Nature of contents: biography Description: ,6.Publisher: 1937Availability: Items available for reference: PK Kelkar Library, IIT Kanpur [Call number: BTL MONO B-1031 ] (1).

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