7561
Publicado 1963
“...E.U.A National Bureau of Standards...”
7562
7563
7564
Publicado 1845
“...Massachusetts (E.U.A.) Secretary of the Commonwealth...”
7565
7566
7567
7568
7569
Publicado 1902
“...E.U.A Adjutant-General's Office...”
7570
7571
7572
7573
7574
Publicado 1960
“...Biblioteca civica "A. Mai" di Bergamo...”
7575
7576
7577
7578
7579
7580
Publicado 1971
“...E.U.A . National Bureau of Standards...”