"smale, p h. "
introduction to telecommunications systems: / p.h. smale - 1 ed. - uk : pitman 1986. - "iv, 156p.; 25 cm."
0 273 02442 6
telecommunications systems--
621. 38 sma
introduction to telecommunications systems: / p.h. smale - 1 ed. - uk : pitman 1986. - "iv, 156p.; 25 cm."
0 273 02442 6
telecommunications systems--
621. 38 sma