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/Notes in this color and between two / are from the operator of the German mirror site and translator/.

Update: 25.01.23

Copyright Dr. Eng. Jan Pająk

Img.548 from Seismograph (#H4)

Img.548 (#H4) One more interesting replica of "houfeng didongy yi". In 2003 it was featured on the website www.iris.washington.edu where it appeared courtesy of "National Geographic" magazine.

Visitors since 15.12.22: (english sites)