Columbia subject headings:
Christian Hebraists--Germany--Correspondence.
Schickard, Wilhelm, 1592-1635.
Schickard, Wilhelm, 1592-1635. Correspondence.
Scholars--Germany--Correspondence.
Harvard subject headings:
Christian Hebraists--Germany--Correspondence.
Schickard, Wilhelm, 1592-1635
Schickard, Wilhelm, 1592-1635. Correspondence.
Scholars--Germany--Correspondence.
Princeton subject headings:
Astronomers--Germany--Correspondence.
Schickard, Wilhelm, 1592-1635. Correspondence.