Hans and Lotte Hass have reached a turning point in their lives
While new research targets beckon, they talk to Stewart Wavell about their years of under-water adventure and how it all began.
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Hans and Lotte Hass have reached a turning point in their lives
While new research targets beckon, they talk to Stewart Wavell about their years of under-water adventure and how it all began.
BBC Home Service is a radio channel that started transmitting on the 1st September 1939 and ended on the 29th September 1967.
