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 | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Maximilian Stock |
Taille de l’image : | 4710 px × 3622 px |
Model Release : | Disponible |
Property Release : | Non requis |
Restrictions : |
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