Search Results       Your search for [author]Slootweg, Adri Peter, 1944- returned 1 record.           Multiple beam generation with a digital computer for echosounding at low high frequencies. by Slootweg, Adri Peter, 1944-; Utrecht: Drukkerij Elinkwijk BV, 1980. Subject: Echo sounding.          Add to Book Cart Relevance: 36.22%