TY  - RPRT
TI  - Programs SPEKTRA and RPLOT; how to display seismic amplitude spectra and special ratios on the Eclipse
AU  - Peter R. Stevenson
PY  - 1981
DO  - 10.3133/ofr81830
UR  - https://pubs.usgs.gov/publication/ofr81830
ID  - ofr81830
ER  -