Hat mitgewirkt an:
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German military vehicles of World War II : an illustrated guide to cars, trucks, half-tracks, motorcycles, amphibious vehicles and others
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Aircraft of the Luftwaffe, 1935 - 1945 : an illustrated guide
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An illustrated dictionary of the Third Reich
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The illustrated handbook of flak : German anti-air defences 1935 - 1945 ; weapons, emplacements, equipments