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Isdn, Decnet, and Sna Communications: Bartee, Thomas: 9780672225123: Amazon.com: Books
ISDN and Broadband ISDN: Stallings, William: 9780024154750: Amazon.com: Books
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ISDN Applications in Education and Training (Telecommunications): Mason, Robin, Bacsich, Paul: 9780852968604: Amazon.com: Books
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