Noll A.M
Introduction to telephones & telephone systems - 2nd ed. - Boston Artech house 1991 - 244 p
ГФ 16189
Англи хэл дээр,
0-89006-550-0
telephone telephone systems mobile service
Introduction to telephones & telephone systems - 2nd ed. - Boston Artech house 1991 - 244 p
ГФ 16189
Англи хэл дээр,
0-89006-550-0
telephone telephone systems mobile service