TY  - RPRT
TI  - Summaries of technical reports, Volume XV
AU  - Muriel L. Jacobson
AU  - Thelma R. Rodriguez
AU  - Wanda H. Seiders
PY  - 1983
DO  - 10.3133/ofr8390
UR  - https://pubs.usgs.gov/publication/ofr8390
ID  - ofr8390
ER  -