BSTJ 57: 6. July-August 1978: The UNIX Time-Sharing System. (Ritchie, D.M.; Thompson, K.) : Free Download, Borrow, and Streaming : Internet Archive
The UNIX Time-Sharing System : Bell Laboratories : Free Download, Borrow, and Streaming : Internet Archive
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The UNIX™ System Guidebook (Springer Books on Professional Computing): Silvester, Peter P.: 9780387964898: Amazon.com: Books
BSTJ 57: 6. July-August 1978: UNIX Time-Sharing System: The C Programming Language. (Ritchie, D.M.; Johnson, S.C.; Lesk, M.E.; Kernighan, B.W.) : Free Download, Borrow, and Streaming : Internet Archive
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UNIX time-sharing system: UNIX programmer's manual: inc-bell-telephone-laboratories: 9780030617423: Amazon.com: Books
BSTJ 57: 6. July-August 1978: The UNIX Time-Sharing System. (Ritchie, D.M.; Thompson, K.) : Free Download, Borrow, and Streaming : Internet Archive
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Unix Time-Sharing System: Unix Programmer's Manual: Bell Telephone Laboratories, Inc.: 9780030617430: Amazon.com: Books
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