Very sad and shocking news. My heartfelt condolences.
regards
rdgarg
R.D. Garg
Professor,��Geomatics, Civil Engg. Deptt.
IIT Roorkee, India

On Sat, 18 Sept 2021 at 06:02, Hirofumi Hayashi <pica.hayashi@gmail.com> wrote:
Dear All,

I am sorry to hear about Martin Isenburg passing.
I was quite shocked when I heard the news.
Please accept my heartfelt condolences.

In deepest sympathy,

Hirofumi Hayashi

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Hayashi Hirofumi
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