TY - RPRT TI - Studies on combined effects of organophosphates and heavy metals in birds. I. Plasma and brain cholinesterase in Coturnix quail fed methyl mercury and orally dosed with parathion AU - M. P. Dieter AU - J. Larry Ludke PY - 1975 DO - 10.1007/bf01685332 UR - https://pubs.usgs.gov/publication/5221350 ID - 5221350 ER -