Das Porsche 911er Motoren Schrauberhandbuch - Reparieren und Optimieren leicht gemacht: Alle Porsche 911 Motoren 1965-1989: Dempsey, Wayne R.: 9783868529463: Amazon.com: Books
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Porsche 911 (964): Carrera 2, Carrera 4 and turbocharged models. Model years 1989 to 1994 (Essential Buyer's Guide series), Streather, Adrian, eBook - Amazon.com
Praxisratgeber Klassikerkauf Porsche 911: Alle Modelle bis 1989 (German Edition), Morgan, Peter, eBook - Amazon.com
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