TY - BOOK AU - Kraaijpoel,Dirk Anton TI - Seismic ray fields and ray field maps: theory and algorithms SN - 9057440938 PY - 2003/// CY - [ s.l. PB - s.n. ] KW - Geology KW - Seismic ray field KW - Siesmic waves N1 - Includes bibliographical references N2 - Seismic waves are widely used to study the earth's interrior by means of measurements on or close to its surface ER -