Columbia subject headings:
Manson, Patrick, Sir, 1844-1922.
Ross, Ronald, Sir, 1857-1932.
Harvard subject headings:
Manson, Patrick, Sir, 1844-1922.
Ross, Ronald, Sir, 1857-1932
Princeton subject headings:
Malaria--History.
Manson, Patrick, Sir, 1844-1922.
Parasitologists--Great Britain--Correspondence.
Parasitology--History.
Ross, Ronald, Sir, 1857-1932.