See index for references to ELN and especially pp 177-178 for history and development. Book call no. The Americas , edited by Charles F. Bahmueller. Hackensack, NJ, Salem Press, 2000. Colombia, pp 195-204.
Book call no.
R 909.82 W9273 v.1 Document Library of Congress. Congressional Research Service. Washington, GPO, 2000. The Assault on Democratic Society in Colombia. Castano Threatens Venezuela, Panama.