"Official Panama Canal publication."
Imprint varies: Balboa Hights, 1963-1978; Miami, Fla., 1979-1982; Balboa Heights, Pan. 1983-1999.
Volumes for 1994-1995 distributed to depository libraries in microfiche.
Text in English and Spanish; Spanish text inverted. Spanish and English texts have often different content.
Issued by: Government of the Canal Zone <June 24, 1966-June 13 1969>; by the Panama Canal Company, <Aug. 13, 1976>-Sept. 14, 1979; by the Panama Canal Commission, Sept. 20, 1979-Dec. 1999.
Description based on: Vol. 5, no. 1 (June 24, 1966); title from caption.