Columbia subject headings:
Harvard subject headings:
Blaschko, Alfred, 1858-1922--Bibliography.
Blaschko, Alfred, 1858-1922.
Sexually transmitted diseases--Germany--Bibliography.
Princeton subject headings:
Blaschko, Alfred, 1858-1922--Bibliography.
Blaschko, Alfred, 1858-1922.
Sexually transmitted diseases--Germany--Bibliography.