7aaa manual - copy
Bell System Practice 501
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Bell System Practice 501-136-100 Issue 7 January 1979

 
12    Pages

Searchable  Format.

Bell System Practice 501-164-203 Issue 2 September 1982

 
8    Pages

Searchable  Format.

Bell System Practice 501-165-117 Issue 2 September 1982

 
5    Pages

Searchable  Format.

Bell System Practice 501-211-102 Issue 6 May 1982

 
17    Pages

Searchable  Format.

Bell System Practice 501-250-303 Issue 4 September 1978

 
6   Pages

Searchable  Format.

Bell System Practice 501-259-101 Issue 9 June 1979

 
4    Pages

Searchable  Format.