Columbia subject headings:
Geographers--Germany--Congresses.
Olearius, Adam, 1603-1671--Congresses.
Harvard subject headings:
Geographers--Germany--Congresses.
Olearius, Adam, 1603-1671--Congresses.
Princeton subject headings:
Geographers--Germany--Congresses.
Olearius, Adam, 1603-1671--Congresses.