241
242
243
Publicado 1928
“...Pan American Union (Washington, D.C.)...”
244
245
246
247
248
249
Publicado 1991
“...Center for Strategic and International Studies (Washington, D.C.)...”
250
Publicado 1942
“...Library of Congress (Washington D.C.) Reference Dept...”
251
Publicado 1916
“...Pan American Scientific Congress Washington, D. C...”
252
Publicado 1966
“...Library of Congress (Washington, D.C.) Hispanic Foundation...”
253
por Stumberg, George Wilfred
Publicado 1931
“...Library of Congress (Washington D.C.) Law Library...”Publicado 1931
254
por Palmer, Thomas Waverly, 1891-
Publicado 1915
“...Library of Congress (Washington D.C.) Law Library...”Publicado 1915
255
Publicado 1917
“...Library of Congress (Washington D.C.) Law Library...”
256
por Gittinger, James Price, 1928-
Publicado 1983
“...Instituto de Desarrollo Económico (Washington, D.C.)...”Publicado 1983
257
Publicado 1929
“...Phillips Memorial Art Gallery (Washington, D.C.)...”
258
Publicado 1945
“...Library of Congress (Washington, D.C.) Hispanic Foundation...”
259
por Jones, Cecil Knight 1872-
Publicado 1942
“...Library of Congress (Washington (D.C.)) Hispanic Foundation...”Publicado 1942
260
por Ostrow, Stephen E
Publicado 1998
“...Council on Library and Information Resources (Washington, D.C.)...”Publicado 1998