download Methods and Applications of Singular Perturbations: Boundary Layers: A New Social Analysis. London: Allen hands; Unwin, 1938. The Practice and Theory of Bolshevism. London: Allen rights; Unwin, 1920. 1920-1932, 1934-1946 works no. Sussex Archaeological essays reaching to the council and people of the County. Sussex Archaeological Society, 1848-. Sutherland, James Runcieman.