Columbia subject headings:
Mälzel, Johann Nepomuk, 1772-1838--Fiction.
Schlumberger, William--Fiction.
Harvard subject headings:
Mälzel, Johann Nepomuk, 1772-1838--Fiction.
Schlumberger, William--Fiction.
Princeton subject headings:
Fiction.
Mälzel, Johann Nepomuk, 1772-1838--Fiction.
Schlumberger, William--Fiction.