Inter-American Conference on Agriculture, 3rd, Caracas, 1945.
Douglas Frantz
Gérard de Nerval
United States. Office of Surface Mining Reclamation and Enforcement.
Paul Morris
Graham Rickard
[International Conference for the Abolition of Import and Export Prohibitions and Restrictions, 2nd, Geneva, 1928]
M. Napolitano
D. M Anderson
Heriberto Frías
John F. Melby
Cathy King