Columbia subject headings:
Clock and watch makers--Switzerland--Travel--Spain.
Jaquet-Droz, Pierre, 1721-1790--Travel--Spain.
Sandoz, Abraham Louis, 1712-1766--Travel--Spain.
Spain--Description and travel.
Harvard subject headings:
Clock and watch makers--Switzerland--Biography.
Clock and watch makers--Switzerland--Travel--Spain.
Clock and watch makers--Travel--Spain.
Jaquet-Droz, Pierre, 1721-1790--Journeys--Spain.
Jaquet-Droz, Pierre, 1721-1790--Travel--Spain.
Sandoz, Abraham Louis, 1712-1766--Journeys--Spain.
Sandoz, Abraham Louis, 1712-1766--Travel--Spain.
Spain--Description and travel.
Princeton subject headings:
Clock and watch makers--Switzerland.
Jaquet-Droz, Pierre, 1721-
Sandoz, Abraham Louis, 1712-1766.
Spain--Description and travel.