TY - RPRT TI - Portable zooplankton sampling apparatus for hatchery ponds AU - Bobby W. Farquhar AU - J. G. Geiger PY - 1984 DO - 10.1577/1548-8640(1984)46<209:pzsafh>2.0.co;2 UR - https://pubs.usgs.gov/publication/1013861 ID - 1013861 ER -