Colombia, pp 3-6. Book call no. The Contemporary Crisis in Historical Perspective , edited by Charles Bergquist and others. Wilmington, DE, SR Books, 1992. 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.