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粉体粉末冶金協会 Chemical Industry and Engineering Society of China Korean InstituteofChemicalEngineersAmericanInstituteofChemicalEngineers Deutsche Gesellschaft
Proceedings (AmericanInstituteofChemicalEngineers) 1: 325–330. A77-12662 02-44. ^ Association for the Advancement of Baltic Studies (1977). “Usage of Estonian