| virtuallrc.com | |
| 网站标题： | Virtual Learning Resources Center |
| 网站简介： | A Google alternative safe search engine for students offering information and reference sites: art, social sciences,social issues,social problems, history, biography, magazines, newspapers,encyclopedias,science, math, chemistry, biology, and dictionaries. |
| 关键字： | safe search engine library reference humanities history social sciences art art history biology biography reference dictionaries encyclopedias almanacs electronic texts technology mathematics literatu |
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