7661
7662
Publicado 1852
“...E.U.A Light-house Board...”
7663
7664
7665
7666
7667
7668
Publicado 1968
“...E. U. A. National Bureau of Standards...”
7669
7670
7671
7672
Publicado 1865
“...New York E.U.A Citizens...”
7673
7674
Publicado 1971
“...E.U.A National Bureau of Standards...”
7675
7676
7677
7678
7679
7680
Publicado 1931
“...California (E.U.A.) Dept. of Education...”