TY - RPRT TI - Improved above-substrate sampler for macrophytes and phytomacrofauna AU - Charles L. Brown PY - 1984 DO - 10.1577/1548-8640(1984)46<142:iasfma>2.0.co;2 UR - https://pubs.usgs.gov/publication/1000085 ID - 1000085 ER -