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Echo Sounding

1937: Vol. XIV, No. 2

Echo Sounding devices presented by the Marconi Sounding Device Company during the IVth International Hydrographic Conference Monaco, 1937 — Marconi Echometer, types 421, 424, 429, 430, Marconi Magneto Striction Equipment, with recorder

Enviado
julio 31, 2018
Publicado
2018-05-30