Convention on Biological Diversity 19-30 May / Naturea s 100 Best ... Organisation de la Presse Africaine (Communiques de presse), Switzerland - The two main ways of reducing friction in mechanical and electrical devices are ball bearings and silicon carbide or ultra nano-crystalline diamond. ... |
Thursday, May 29, 2008
Convention on Biological Diversity 19-30 May / Naturea s 100 Best ... - Organisation de la Presse Africaine (Communiques de presse)
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