TY  - RPRT
TI  - Spectral structure in the Earth's microseismic background between 20 and 40 seconds
AU  - L.G. Holcomb
PY  - 1998
DO  - 10.1785/bssa0880030744
UR  - https://pubs.usgs.gov/publication/70020445
ID  - 70020445
ER  -