TY - BOOK AU - CervenĂ˝,Vlastislav AU - Ravindra,Ravi TI - Theory of seismic head waves SN - 0802016782 AV - QE538.5 .C47 U1 - 551.22 PY - 1971/// CY - [Toronto] PB - University of Toronto Press KW - Terremotos N1 - BibliografĂ­a: p. [297]-306 ER -