"de vries, leonard . "
the book of telecommunication: / leonard.. de vries - 1 ed. - uk : john murray 1962. - ", 131p.; 26 cm."
hard cover
621. 384 2 dev
the book of telecommunication: / leonard.. de vries - 1 ed. - uk : john murray 1962. - ", 131p.; 26 cm."
hard cover
621. 384 2 dev