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		No cover image available Modern communications switching systems by Hobbs, Marvin \| . Series: Edition: 2nd ed Language: English Publication details: Blue Ridge Summit ; Tab Books, ; 1981Availability: Items available for loan: 1 Call number: 621.395.65 Hob. Place hold Add to cart (remove)
		No cover image available Introduction to automatic telephony by Das, P.N \| . Series: Edition: Language: English Publication details: Calcutta ; Modern Book Agency, ; 1963Availability: Items available for loan: 6 Call number: 621.395.34 Das(6), ... Place hold Add to cart (remove)
		No cover image available Introduction to telephone switching by Briley, Bruce E \| . Series: Edition: Language: English Publication details: Reading ; Addison-Wesley, ; 1983Availability: Items available for loan: 1 Call number: 621.395 Bri. Place hold Add to cart (remove)

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