@misc{indiciaee509736632ef, title = {Laboratory comparison of polyethylene and dialysis membrane diffusion samplers}, author = {Theodore A. Ehlke and Thomas E. Imbrigiotta and Jeffrey M. Dale}, year = {2007}, doi = {10.1111/j.1745-6592.2004.tb00704.x}, url = {https://pubs.usgs.gov/publication/70205973}, note = {Source identifier: 70205973} }