"smith, j r. "
elementary telecommunication practice: / j.r. smith - 3 ed. - uk : e l b s 1967. - "xii, 319p.; 19 cm."
0 340 04619 8 hard cover
--
621. 38 smi
elementary telecommunication practice: / j.r. smith - 3 ed. - uk : e l b s 1967. - "xii, 319p.; 19 cm."
0 340 04619 8 hard cover
--
621. 38 smi