| item | description | category | filter | more on... |
| HPAS | High Performance Adhesive System | Governmental/NASA |
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| HPAS | High Performance Adhesive System | Misc/Plastics |
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| HPAS | Home Purchase Assistance Scheme | Other/Housing |
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| HPAS | Human Powered Aircraft For Sport | Radio Stations |
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| HPAS | Hypothalamic Pituitary Adrenocortical System | Medical/Physiology |
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