Columbia subject headings:
Lessing, Theodor, 1872-1933.
Meyerhof, Otto, 1884-1951.
Nelson, Leonard, 1882-1927.
Harvard subject headings:
Lessing, Theodor, 1872-1933.
Meyerhof, Otto, 1884-1951.
Nelson, Leonard, 1882-1927.
Princeton subject headings:
Lessing, Theodor, 1872-1933.
Meyerhof, Otto, 1884-1951.
Nelson, Leonard, 1882-1927.