TY  - BOOK
ED  - Assembly of Mathematical and Physical Sciences (Estados Unidos).
TI  - U.S. earthquake observatories: recommendations for a new national network 
SN  - 0309031311
AV  - QE540.U6 A77
PY  - 1980///
CY  - Washington, D.C.
PB  - National Academy
KW  - Sismología
KW  - Estados Unidos
KW  - Observatorios
ER  -