Whoever closes his eyes to the past is blind to the present.
Richard von Weizsäcker

Tuesday 19 January 2021

Who can give this information?

During my research diving course always new questions. I would like to clarify their post here these questions. I hope that maybe someone has a hint for me.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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