| November 16th |
| 1881 | Joel H. Hildebrand, researcher in solubility and introducer of helium into deep-sea diving, was born. |
Siapa Bilang Kimia Sulit???
| November 16th |
| 1881 | Joel H. Hildebrand, researcher in solubility and introducer of helium into deep-sea diving, was born. |
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