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Category: Amateur Contributions to Science (Sub Category)

Your contribution to the Amateur Contributions to Science database at HW Directory helps us build a comprehensive resource while boosting your own digital footprint.

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Regular Listing

$5.00

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✅ 1 Primary Link with full description

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✅ Submissions to proper Sub Categories

✅ Listed below Featured Listings

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$8.00

One-Time Payment

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⭐ 1 Primary Link + 2 Extra Deep Links

⭐ Priority Placement above Regular Listings

⭐ Guaranteed 24-Hour Review!

⭐ Can Submit to Top Level Categories

⭐ Premium Positioning with special badge

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