00823nam a2200253 a 4500 75136 BD-RjUL 20211209082643.0 890127r19691964enk 000 0 eng d (BD-RjUL) BD-RjUL eng BD-RjUL eng D0400009906 Brown, J. 227337 Telecommunications / J. Brown , E. V.D. Glazier ; editor H.M. Barlow london : Chap and Hall, 1964[1969] xi, 380 p. : ill. ; 22 cm Telecommunication systems Juvenile literature 227338 Glazier, E. V. D 227339 Science at work 227340 ddc BK 75136 75136 0 0 ddc 0 1 NFIC RUCL RUCL Reading 2019-01-24 0 621.382 BRT 1969 2019-01-24 00:00:00 C-1 2019-01-24 BK