Columbia subject headings:
Harvard subject headings:
Astronomy--Bibliography--Catalogs
Books--Switzerland--Zurich--History.
ETH-Bibliothek
Early printed books--Switzerland--Zurich--Catalogs.
Mathematics--Bibliography--Catalogs
Rare books--Switzerland--Zurich--Catalogs.
Princeton subject headings:
Astronomy--Bibliography--Catalogs.
Books--Switzerland--Zurich--History.
ETH-Bibliothek.
Early printed books--Switzerland--Zurich--Catalogs.
Mathematics--Bibliography--Catalogs.
Rare books--Switzerland--Zurich--Catalogs.