TY  - RPRT
TI  - Summaries of technical reports, Volume XI
AU  - Jessie F. Reeves
AU  - Thelma R. Rodriguez
AU  - Wanda H. Seiders
PY  - 1981
DO  - 10.3133/ofr81167
UR  - https://pubs.usgs.gov/publication/ofr81167
ID  - ofr81167
ER  -