Natural asphalts their occurrence, properties and use in road construction in Columbia - Dowling, J. W. F.; Franco L., Rudolfo; Russell, R. B. C.; Transport and Road Research Laboratory (Crowthorne, Berkshire Transport and Road Research Laboratory, 1982)
Includes bibliographical references.
Keywords: Bituminous materials -- Colombia; Roads -- Design and construction. -- Colombia; Pavements, Asphalt -- Design and construction