Green, D. C. Transmission systems II a textbook covering the Level II syllabus of the Technician Education Council D. C. Green - 2nd ed. - Allahabad A. H. Wheeler 1983 - 147p. illus; index ISBN: 273018264 Subjects--Topical Terms: Frequency Div.ModulationTelephone Lines & CablesTransmission Universal Decimal Class. No.: 621.39 / GRE