Search Results       Your search for [subject]Telecommunication systems -- Technological innovations -- History -- 20th century returned 1 record.           Communication and empire : media, markets, and globalization, 1860-1930. by Winseck, Dwayne Roy, 1964-; Durham: Duke University Press, 2007. Subject: Telegraph, Wireless -- History -- 19th century; Telegraph, Wireless -- History -- 20th century; Telecommunication systems -- Technological innovations -- History -- 19th century; Telecommunication systems -- Technological innovations -- History -- 20th century.          Add to Book Cart Relevance: 33.54%