| Hidden Web:
Examples |
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| PubMed
search: [diabetes] |
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| ¢ | 178,975 matches |
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| PubMed is at http://www.ncbi.nlm.nih.gov/PubMed |
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| Google
search: [diabetes
site:www.ncbi.nlm.nih.gov] |
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| 119 matches |
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| Database |
| Query |
| Matches |
| Google |
| PubMed |
| diabetes |
| 178,975 |
| 119 |
| U.S. Patents |
| wireless network |
| 16,741 |
| 0 |
| Library of Congress |
| visa regulations |
| >10,000 |
| 0 |
| … |
| … |
| … |
| … |
