Books by Robert Walpole Ellis
Glaciation in New Mexico
Glaciation in New Mexico
The Red River lobe of the More
The Red River lobe of the Moreno glacier
New Mexico mineral deposits ex
New Mexico mineral deposits except fuels
Tables for determining common
Tables for determining common minerals and rocks
Oil and gas in New Mexico in 1
Oil and gas in New Mexico in 1923
Geology of the Sandia mountain
Geology of the Sandia mountains
The oil situation in New Mexico