| item | description | category | filter | more on... |
| HCGS | Harrison County Genealogical Society | Misc/Hobbies |
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| HCGS | Henry County Genealogical Services | Business/Firms |
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| HCGS | Highlands County Genealogical Society | Misc/Hobbies |
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| HCGS | Hope Creek Generating Station | Business/Firms |
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| HCGS | Hubbard Center for Genome Studies | Medical/Human Genome |
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| HCGS | Human Corneal Growth Supplement | Medical/Physiology |
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