Web Links Local Links CSM: Department of Geophysics Society for Geophysics Graduate Students Center for Wave Phenomenon Near Surface Seismic Center for Petrophysics Center for Rock Abuse Gravity and Magnetics Research Consortium Samizdat Press: Free geophysics books and notes on the web Organizations AAPG: American Association of Petroleum Geologists AGU: American Geophysical Union DGS: Denver Geophysical Society EAGE: European Association of Geoscientists and Engineers GSA: Geological Society of America RMAG: Rocky Mountain Association of Geologists SEG: Society of Expl oration Geophysicists SPE: Society of Petroleum Engineers SPWLA: Society of Professional Well Log Analysts WTGS: West Texas Geological Society