Making phenol-formaldehyde,commercially known as Bakelite (3rd in a series of 4) | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Winters, Charles D. |
Bildgröße: | 2550 px × 3848 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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