H. Spall 1979 <p>Henry Spall talked recently with Robert L. Wesson, the new Chief, Office of Earthquake Studies at the U.S Geological Survey National Center, Reston, Va. Wesson has spent altogether almost 1 year in the U.S.S.R, and 6 months of that time in the Garm area of Soviet Tadzhikistan in 1974.&nbsp;</p> application/pdf en U.S Geological Survey Earthquake research in the Soviet Union article