1
Publicado 1952
“...United States....”
2
Publicado 1886
“...United States...”
3
Publicado 1891
“...United States...”
4
5
Publicado 1902
“...United States...”
6
Publicado 1878
“...United States...”
7
Publicado 1920
“...United States...”
8
9
10
Publicado 1897
“...United States President...”
11
por Taylor, Lauriston Sale, 1902-
Publicado 1982
“...National Radiological Organizations (United States)...”Publicado 1982
12
13
14
Publicado 1951
“...Hispanic Institute in the United States...”
15
Publicado 1909
“...United States Department of state...”
16
Publicado 1921
“...United States War dept...”
17
18
19
20
Publicado 1946
“...Hispanic Institute in the United States...”