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Encyclopedia - Tar: Encyclopedia - Tar
Tar is a viscous black liquid derived from the destructive distillation of organic matter. Most tar is produced from coal as a byproduct ...   » Read the article

Encyclopedia - Cocaine: Encyclopedia Ii - Cocaine - Legal Status
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List of ICD-9 codes - arthropathies and related disorders 710-719. (710) Diffuse diseases of connective tissue (710.0) Systemic lupus...   » Read the article