Karwatka, D. Frederick Rentschler-aircraft engine pioneer. IN Technology's past. Tech directions.
Citazione stile Chigago Style (17a edizione)Karwatka, Dennis. "Frederick Rentschler-aircraft Engine Pioneer. IN Technology's Past." Tech Directions .
Citatione MLA (9a ed.)Karwatka, Dennis. "Frederick Rentschler-aircraft Engine Pioneer. IN Technology's Past." Tech Directions, .
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