Libros

[Apuntes Personales] OTS field problem biology of tropical vertebrates, 1966 - Biology of seedeaters (study made at Los Diamantes, March 15 and 17).

"[Apuntes Personales] Report on OTS field problem - Winter session, 1966. Finca La Pacifica, Cañas, Guanacaste, Costa Rica. Report on "Ant and plant interactions". By Dr. Daniel Janzen."

[Apuntes Personales] O.T.S. Field problem biology of tropical epiphytes, 1966 - Deception as a pollination system in some orchids.

[Apuntes Personales] International Union for the conservation of nature and natural resources - First world conference on national parks

[Apuntes Personales] United States Department of the interior - Address of secretary of the interior stewart L. Udall at the first world conference on parks at seattle, Washington, July 4, 1962.

[Apuntes Personales] United States Department of the interior - Interior secretary udall to head united states delegation to first world conference on national parks.

Ordenanza Numero 56 de 1963 por la cual se crea la sección de parques publicos del pueblo antioqueño.

[Apuntes Personales] OTS fundamentals course Feb - Mach 1966 - Logistics schedule