Douglass C. North ... [et al. Douglas A. Bernstein ... [et al.]. Douglas A.Skoog ...[et al.]. Douglas A.L. Auld ... [et al.]. Douglass C. North Richard C. Holt ... et al. Douglass C. North, Robert Paul Thomas Douglas Bernstein ... [et al.]. Douglas Self ... [et al.]. Doyglass C. North