TY - RPRT TI - Literature review of the potential effects of formalin on nitrogen oxidation efficiency of the biofilters of recirculating aquaculture systems (RAS) for freshwater finfish AU - Kim T. Fredricks PY - 2015 DO - 10.3133/ofr20151097 UR - https://pubs.usgs.gov/publication/ofr20151097 ID - ofr20151097 ER -