Pressure gauge on a cylinder of nitrous oxide in a hospital operating theatre. Nitrous oxide is used as an anaesthetic | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Stevenson, James |
Taille de l’image : | 5006 px × 3477 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |