brooklands military vehicles series Military & civilian amphibians : 1940-1990 / comp. by R.M. Clarke spectrum a5 Biologische en chemische oorlogsvoering / Robin Clarke ; [vert. uit het Engels door Iet Houwer] Mercedes G-wagen : 1981-1994 / comp. by R.M. Clarke defence of Western Europe : papers presented at the National Defence College, Latimer, in September 1972 / edited by John C. Garnett