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Open sources of information
Open sources of information include the surface Internet, the deep Web, and electronic mail, as well as traditional media sources inclusive of niche media or industry-specific newsletters and online discussion groups. They include gray literature, subject-matter experts, and individuals have direct observation or life experience knowledge.
Information are taken from Wikipedia, the open encyclopedia, to which contribute many volunteers from around the whole world. Texts are available under the following conditions GNU Free Documentation License.
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