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Brenig The Pio- neers of Underwater Acoustics Medal went to Darrell Jack- son University of Washington and the loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentinreader033viewer20220424175f32e58d55b76d047d6c71efhtml5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=v11n1-echoeslayout-1-were-presented-to-john-bouyoucos-andavril-brenig-the-pio-htmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: v11n1 echoes:Layout 1 · were presented to John Bouyoucos andAvril Brenig The Pio- neers of Underwater Acoustics Medal went to Darrell Jack- son University of Washington and the loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC 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class=ts-thumb lazyload alt=Page 8: v11n1 echoes:Layout 1 · were presented to John Bouyoucos andAvril Brenig The Pio- neers of Underwater Acoustics Medal went to Darrell Jack- son University of Washington and the loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader033vdocumentinreader033viewer20220424175f32e58d55b76d047d6c71efhtml5thumbnails8jpg width=140 height=200 divdiv