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The Porsche 911 and Derivatives. A Collector's Guide: Cotton, Michael: 9780947981907: Amazon.com: Books
Up-Fixin der PORSCHE" Reprints of All the Technical Data from Vol. XXII, No. 1 through XXV, No. 12, 1977-1980 PORSCHE PANORAMA Official Publication of the Porsche Club of America (Volume V): Blake
Porsche 911 Story by Paul Frere (1980-11-21): Amazon.com: Books
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Amazon.com: Magazine Print Ad: 1980 Porsche 928, Consumer Orientation No 6,"The Blank Paper Principle. Genesis of Porsche's Newest and Best", 2 pages : Collectibles & Fine Art
Porsche 911 SC Service Manual 1978, 1979, 1980, 1981, 1982, 1983 by Bentley Publishers (2012-06-01): Amazon.com: Books
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