geology (4) stuart wier the natural history of the american west (1) explorers (1) western united states native trees of colorado (1)
Exploring the World from the American West ... a row of narrow paper spines representing monographs on various subjects to which Peter had given his attention at one time of another. -- Jill Paton Walsh Seeing inside the Earth with Seismology
Seismic velocity anomalies tomography with the UNAVCO GEON IDV 3D data viewer
Mantle convection