1
Pubblicazione: 1985
Superior document: Tönnies Fenne's Low German manual of spoken Russian Pskov 1607 3
2
Pubblicazione: 1961
Superior document: Tönnies Fenne's Low German manual of spoken Russian Pskov 1607 1
3
Pubblicazione: 1986
Superior document: Tönnies Fenne's Low German manual of spoken Russian Pskov 1607 4
4
Pubblicazione: 1970
Superior document: Tönnies Fenne's Low German manual of spoken Russian Pskov 1607 2
5