Pautan luar Pemeruman gema

Pautan luar Pemeruman gema

Kategori berkenaan Pemeruman gema di Wikimedia Commons

"How Echoes Tell Depth of Water Under Ship" Popular Mechanics Monthly, July 1930 - drawing of details of early depth finders using echoes
ELAC (1982) An Introduction to Echosounding. Honeywell-ELAC-Nautik GmbH, Kiel, 88 pp, (pdf 27.5 MB)

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WikiPedia: Pemeruman gema http://www.history.noaa.gov/stories_tales/poletobe... https://books.google.com/books?id=T-QDAAAAMBAJ&pg=...