TY  - BOOK
AU  - Carginard,L.
AU  - Flinn,Edward A.
AU  - Dix,C.Hewitt
TI  - Reflection and refraction of progressive seismic waves
U1  - 551.22 
PY  - 1962///
CY  - New York
PB  - MacGraw-Hill Book
KW  - Seismometry
N1  - Includes bibliographical references and index
ER  -