Columbia subject headings:
Natural gas--Rocky Mountains Region.
Petroleum--Rocky Mountains Region.
Seismic prospecting--Rocky Mountains Region.
Seismic reflection method.
Harvard subject headings:
Prospecting--Rocky Mountains Region--Geophysical methods--Atlases.
Seismic prospecting--Rocky Mountains Region--Atlases.
Seismology--Rocky Mountains Region.
Princeton subject headings:
Natural gas--Rocky Mountains Region.
Petroleum--Rocky Mountains Region.
Seismic prospecting--Rocky Mountains Region.
Seismic reflection method.