"ronayne, john . "
introduction to digital communications switching: / john.. ronayne - 1 ed. - uk : pitman 1986. - ", 211p.; 25 cm."
0-273-02178-8
--
621. 381 ron
introduction to digital communications switching: / john.. ronayne - 1 ed. - uk : pitman 1986. - ", 211p.; 25 cm."
0-273-02178-8
--
621. 381 ron