Militaire en geestelijke weerbaarheid in onze tijd / S.W. Couwenberg mededelingen en verhandelingen Weersverwachtingen op langen termijn in Nederland = Long-range weather forecasts in the Netherlands / S.W. Visser history of the second world war. united kingdom military series war at sea, 1939-1945 : The defensive / S.W. Roskill history of the second world war. united kingdom military series war at sea, 1939-1945 : The period of balance / S.W. Roskill history of the second world war. united kingdom military series war at sea, 1939-1945 : The offensive / S.W. Roskill Tussen nationalisme en supranationalisme / S.W. Couwenberg ... [et al.] schiffer military/aviation history Protect & avenge : the 49th Fighter Group in World War II / S.W. Ferguson & William K. Pascalis
