TY - RPRT TI - Contaminant gradients in trees: Directional tree coring reveals boundaries of soil and soil-gas contamination with potential applications in vapor intrusion assessment AU - Jordan L. Wilson AU - V.A. Samaranayake AU - Matthew A. Limmer AU - John G. Schumacher AU - Joel G. Burken PY - 2017 DO - 10.1021/acs.est.7b03466 UR - https://pubs.usgs.gov/publication/70194566 ID - 70194566 ER -