TY - RPRT TI - Abstracts of the U.S. Geological Survey, Central Region, 1989 poster review; collected abstracts of selected poster papers presented at scientific meetings AU - C. E. Barker AU - A. B. Coury PY - 1989 DO - 10.3133/ofr89644 UR - https://pubs.usgs.gov/publication/ofr89644 ID - ofr89644 ER -