Internationale Leder- und Pergamenttagung = International leather- and parchmentsymposium : vom 8. Mai bis 12. Mai 1989 / ICOM Arbeitsgruppe, leathercraft and related objects Restoration project "Dutch guns in Russia" : the restoration of 17th and 18th century Dutch firarms from the Kremlin Armoury / Restoration projects: H.L. Visser, … Johnson rifles and machine guns : the story of Melvin Maynard Johnson, Jr. and his guns