Columbia subject headings:
Geology--Guadalupe Mountains (N.M. and Tex.)--Congresses.
Harvard subject headings:
Geology--Guadalupe Mountains (N.M. and Tex.)--Congresses--Guidebooks.
Geology--Guadalupe Mountains (N.M. and Tex.)--Congresses.
Geology--Guadalupe Mountains (N.M. and Tex.)--Guidebooks.
Guadalupe Mountains (N.M. and Tex.)--Description and travel--Congresses--Guidebooks.
Guadalupe Mountains (N.M. and Tex.)--Guidebooks.
Princeton subject headings: