Actas del octavo Congreso científico americano: verificado en la ciudad de Washington del 10 al 18 de mayo, 1940 /  
Gobierno de los Estados Unidos de America. 
 - Washington, D.C :   Government Printing Office,   1941. 
<br/><br/> Vol. 1 Organización, actividades, resoluciones y delegaciones     Vol 2 Anthropological sciences     Vol 3 Biological sciences    Vol 4 Geological sciences    Vol 5 Agriculture and conservation     Vol 6 Public health and medicine     Vol 7 Physical and chemical sciences     Vol 8 Statistics    Vol 9 History and geography    Vol 10 International law, public law, and jurisprudence    Vol 11 Economics and sociology    Vol 12 Education