TY - RPRT TI - Acute toxicity of the lampricide 3-trifluoromethyl-4-nitrophenol (TFM) to nymphs of mayflies (Hexagenia sp.) AU - C.R. Fremling PY - 1975 UR - https://pubs.usgs.gov/publication/2001169 ID - 2001169 ER -