Columbia subject headings:
Harvard subject headings:
Glass factories--Germany--Jena--History.
Glass manufacture--Germany--Jena--History.
Glass trade--Germany--Jena--History.
Glassware industry--Germany--Jena--History.
Jenaer Glaswerk Schott & Gen.--History.
Princeton subject headings:
Glass factories--Germany--Jena--History.
Glass trade--Germany--Jena--History.
Jenaer Glaswerk Schott & Gen.--History.