Columbia subject headings:
Monochord--Early works to 1800.
Musical intervals and scales--Early works to 1800.
Musical temperament--Early works to 1800.
Tuning--Early works to 1800.
Harvard subject headings:
Monochord--Early works to 1800.
Musical intervals and scales--Early works to 1800.
Musical temperament--Early works to 1800.
Tuning--Early works to 1800.
Princeton subject headings:
Monochord--Early works to 1800.
Musical intervals and scales--Early works to 1800.
Musical temperament--Early works to 1800.
Tuning--Early works to 1800.