Columbia subject headings:
Harvard subject headings:
Erosion--Lebanon--Jubayl.
Geomorphology--Lebanon--Jubayl.
Nature--Effect of human beings on--Lebanon.
Paleontology--Lebanon--Jubayl.
Princeton subject headings:
Erosion--Lebanon--Jubayl.
Geomorphology--Lebanon--Jubayl.
Nature--Effect of human beings on--Lebanon.
Paleontology--Lebanon--Jubayl.