Columbia subject headings:
Harvard subject headings:
Biologists--Biography
Chemists--Switzerland--Biography.
Physicians--Biography
Physicians--Switzerland--Biography
Scientists--Biography
Tomarkin, Leandro W., 1895-1967.
Tomarkin, Leandro, 1895-1967.
Princeton subject headings:
Chemists--Switzerland--Biography.
Physicians--Switzerland--Biography.
Tomarkin, Leandro W., 1895-1967.