Columbia subject headings:
Geology--Morocco--Tarfaya Watershed.
Paleoecology--Morocco--Tarfaya Watershed.
Paleontology--Morocco--Tarfaya Watershed.
Tarfaya Watershed (Morocco)
Harvard subject headings:
Geology--Morocco--Tarfaya Watershed.
Paleoecology--Morocco--Tarfaya Watershed.
Paleontology--Morocco--Tarfaya Watershed.
Tarfaya Watershed (Morocco)
Princeton subject headings: