"thompson, richard . "
telephone switching systems: / richard.. thompson - 1 ed. - uk : artech house 2000. - "xviii, 859p.; 26 cm."
1-58053-088-5 hard cover
telephone switching systems --
621. 387 tho
telephone switching systems: / richard.. thompson - 1 ed. - uk : artech house 2000. - "xviii, 859p.; 26 cm."
1-58053-088-5 hard cover
telephone switching systems --
621. 387 tho