China National Knowledge Infrastructure (CNKI) is an e-publishing project supported by the Government of China — Ministry of Education, Ministry of Science and Technology, Propaganda Ministry and General Administration of Press and Publications. The project provides over 90% of China knowledge resources, the widest in title, type and geography coverage and deepest in year coverage in the country. The database covers journals, dissertations, newspapers, proceedings, yearbooks, reference works, encyclopedia, patents, standards, S&T achievements and laws and regulations in multiple scientific areas. Mass digitalization of knowledge resources in China in late 90’s initiated a creation of the most comprehensive system of China academic knowledge platforms. Thus, in 1999 Tsinghua Univ

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