Columbia subject headings:
Biologists--Correspondence.
Caldani, Leopoldo Marco Antonio, 1725-1813.
Physiologists--Correspondence.
Spallanzani, Lazzaro, 1729-1799.
Harvard subject headings:
Biologists--Italy--Biography.
Biologists--Italy--Correspondence.
Caldani, Leopoldo Marco Antonio, 1725-1813--Correspondence.
Naturalists--Italy--Biography.
Spallanzani, Lazzaro, 1729-1799--Correspondence.
Princeton subject headings:
Biologists--Correspondence.
Caldani, Leopoldo Marco Antonio, 1725-1813.
Physiologists--Correspondence.
Spallanzani, Lazzaro, 1729-1799.