00909 a2200193 4500 Nust 20230802102041.0 34030021 Nust 621.385,BER Berkeley, Gordon Spence 113884 Traffic and trunking principles in automatic telephony / G. S. Berkeley E. Benn limited London, 1934 xi, 341 p incl illus tables diagrs 22 cm Traffic In Automatic Exchange (Page-13), Trunking Schemes (Page-24), Racks and Cabling (Page-70), Full Availability (Page-116), Grading (Page-141), Design Of An Automatic Exchange (Page-174), Junction Traffic (Page-208), Traffic Recording (Page-219), Other Systems (Page-237), Miscellaneous (Page-294). Berkeley, Gordon Spence 113884 Traffic and trunking principles in automatic telephony 113885 ddc BK 621.385,BER 183665 183665 0 0 ddc 0 0 MCS MCS GEN 2016-12-12 621.385,BER MCS21176 2016-12-08 2016-12-12 BK Almirah No.84, Shelf No.4 0 0 ddc 0 0 MCS MCS GEN 2016-12-12 621.385,BER MCS21177 2016-12-08 2016-12-12 BK Almirah No.84, Shelf No.4 0 0 ddc 0 0 MCS MCS GEN 2016-12-12 621.385,BER MCS22277 2016-12-08 2016-12-12 BK Almirah No.84, Shelf No.4 0 0 ddc 0 0 MCS MCS GEN 2016-12-12 621.385,BER MCS6757 2016-12-08 2016-12-12 BK Almirah No.84, Shelf No.4 0 0 ddc 0 0 MCS MCS GEN 2016-12-12 621.385,BER MCS6866 2016-12-08 2016-12-12 BK Almirah No.84, Shelf No.4