Bell System Technical Journal (Journal Devoted To Scientific And Engineering Aspects Of Electrical Communication)
Bell System Technical Journal (Journal Devoted To Scientific And Engineering Aspects Of Electrical Communication)
- New York American Telephone And Telegraph Co. 1971
- Nos. 7-10
D66m73:N22
D66m73:N22 / F2.5
D66m73:N22
D66m73:N22 / F2.5