Dredging machine, illustration. Dredging is effected in various ways; either by drags, or scoops, or rakes, or machines. From 'Appleton's dictionary of machines, mechanics, engine-work, and engineering' by D Appleton and Company. Publication date 1874. | |
Lizenzart: | Lizenzfrei |
Credit: | Science Photo Library / Photostock-Israel |
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Eigentums-Rechte: | nicht erforderlich |
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