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Update: 25.01.23

Copyright Dr. Eng. Jan Pająk

Img.530 from Sabotages

Img.531 from Sabotages

Img.530 Examples of illustration P9(d) from my monograph [1/4] (and also illustration O9(d) from my monograph [1/3]) shown in two different states, viz: (top) - before tampering, while (bottom) already after tampering.

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