en
Fueling Mechanics: 6 Classic Books on Gas Oil and Petrol Engines - The Petrol Engine The Gasoline Motor Practical Hand Book of Gas Oil and Steam Engines Gas and Oil Engines Simply Explained etc
H. de Graffigny, Walter C. Runciman, Rodolphe Edgard Mathot, Francis John Kean, Harold Whiting Slauson, John B. Rathbun
en
The Motor Enthusiast's Dream Collection: 6 Interesting Reads - Gas and Petroleum Engines Motors The First Airplane Diesel Engine The Gasoline Motor etc
James Slough Zerbe, Leonard S. Hobbs, Robert B. Meyer, H. de Graffigny, Harold Whiting Slauson, Alfred Powell Morgan
fr
Aventures extraordinaires d'un savant russe: Les planètes géantes et les comètes - Édition enrichie
Georges Le Faure, H. de Graffigny
fr
Aventures extraordinaires d'un savant russe: Le Soleil et les petites planètes - Édition enrichie
Georges Le Faure, H. de Graffigny
