TY  - BOOK
TI  - Tabellenbuch Fernsprechverkehrstheorie
SN  - 3800913437
PY  - 1970///
CY  - Berlin
PB  - Siemens Aktiengesellschaft
KW  - Telephone systems
KW  - Tables
N1  - Accompanied by working chart 1 and 2 for traffic variance method; Text in German and English; Bibliography: p.404-407
ER  -