MODEL RELEASED. Sewage treatment research. Technician working at an experimental plant for sewage treatment. He is taking a sample for testing. Sewage contains a variety of organic and inorganic substances which require a number of different treatment methods | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Maximilian Stock |
Bildgröße: | 4710 px × 3622 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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