Concrete,light micrograph. Polished section through a sample of solidified concrete,showing aggregates of gravel and sand from the cement used in its construction | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Landmann, Patrick |
Bildgröße: | 5138 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |