7541
7542
7543
Publicado 1962
“...E.U.A National Bureau of Standards...”
7544
7545
7546
7547
7548
Publicado 1923
“...E.U.A Coast and Geodetic Survey...”
7549
Publicado 1924
“...E.U.A Coast and Geodetic Survey...”
7550
Publicado 1925
“...E.U.A Coast and Geodetic Survey...”
7551
Publicado 1926
“...E.U.A Coast and Geodetic Survey...”
7552
Publicado 1927
“...E.U.A Coast and Geodetic Survey...”
7553
7554
7555
7556
Publicado 1965
“...E.U.A National Bureau of Standards...”
7557
Publicado 1941
“...E.U.A Constitución Sesquicentennial Commission...”
7558
Publicado 1954
“...E.U.A National Bureau of Standards...”
7559
Publicado 1965
“...E.U.A National Bureau of Standards...”
7560