| item | description | category | filter | more on... |
| HPHT | High Pressure, High Temperature | Edu./Chemistry |
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| HPHT | High Pressure, High Temperature | Edu./Geology |
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| HPHT | High Pressure, High Temperature | Edu./Ocean Science |
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| HPHT | High Pressure, High Temperature | Edu./Physics |
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| HPHT | Highland Park Heritage Trust | Non-Profit Organizations |
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