Columbia subject headings:
Harvard subject headings:
Cocchi, Igino, 1828-1913--Correspondence.
Geologists--Italy--Correspondence.
Meneghini, Giuseppe, 1811-1889--Correspondence.
Princeton subject headings:
Cocchi, Igino, 1828-1913--Correspondence.
Geology--Italy--History--19th century--Sources.
Meneghini, Giuseppe, 1811-1889--Correspondence.
Mineralogy--Italy--History--19th century--Sources.
Natural history--Italy--19th century--Sources.
Paleontologists--Italy--Correspondence.
Personal correspondence.