TY - RPRT TI - Hydroacoustic estimation of zooplankton biomass at two shoal complexes in the Apostle Islands Region of Lake Superior AU - B.V. Holbrook AU - T.R. Hrabik AU - D.K. Branstrator AU - D.L. Yule AU - J.D. Stockwell PY - 2006 DO - 10.3394/0380-1330(2006)32[680:heozba]2.0.co;2 UR - https://pubs.usgs.gov/publication/70028536 ID - 70028536 ER -