MODEL RELEASED. Teenage students using a laptop interfaced sensor to test stream water for chemical indicators of quality,such as chlorine,nitrates,phosphates,pH,iron,etc. The site is Ringwood State Park in northern New Jersey | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Shields, Martin |
Bildgröße: | 4841 px × 3360 px |
Modell-Rechte: | vorhanden |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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