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This professional organization works to promote the chromium industry, from mining and production to industry and health. The site provides abundant information about the properties, sources and uses for chromium. Graphs and text explain the global distribution of chromite ore and its primary industrials uses including stainless steel and metallurgy, cement, leather tanning, timber and paint. The ... Full description.
Grade level: Graduate / Professional
Resource type: Commercial portal
Subject: Chemistry, Environmental science, Geology
 
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This is an extensive resource for students of high-level mathematics. Wolfram Research and Eric Weisstein have put together this site with the very advanced student in mind, and the focal point is the enormous resource library. Covering a wide range of math topics, such as number theory, discrete mathematics, and topology, the 10,000+ pages feature notes, diagrams, example problems, definitions of ... Full description.
Grade level: High (9-12), College (13-14), College (15-16), Graduate / Professional
Resource type: Commercial portal, Educational portal
Subject: Mathematics
 
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