1.
Technological Substitution in Switching Equipment for Local Telecommunications
by Vanston, Lawrence K., Lenz,...
ISBN: 9780614181227
List Price: $45.00
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Technological Substitution in Transmission Facilities for Local Telecommunications
by Vanston, Lawrence K., Lenz,...
ISBN: 9780614181210
List Price: $45.00
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Critical Examination of the Future Utilization and Application of Cellular Technology in Tel...
by Lenz, Ralph C.
ISBN: 9780614181203
List Price: $45.00
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Effects of Various Levels of Aggregation in Technology Substitutions
by Lenz, Ralph C., Vanston, La...
ISBN: 9780614181180
List Price: $45.00
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Rates of Adoption/Substitution in Technological Change
by Lenz, Ralph C.
ISBN: 9780614181173
List Price: $25.00
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Personal Communications: Perspectives, Forecasts, and Impacts
by Lenz, Ralph C., Vanston, La...
ISBN: 9781884154027
List Price: $45.00