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Poggendorff, J.C.: Biographisch-literarisches Handwörterbuch der exakten Naturwissenschaften (2000)
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¬Der Brockhaus Naturwissenschaft und Technik (2002)
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Zia, L.L.: Growing a national learning environments and resources network for science, mathematics, engineering, and technology education : current issues and opportunities for the NSDL program (2001)
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Zia, L.L.: ¬The NSF National Science, Technology, Engineering, and Mathematics Education Digital Library (NSDL) Program : new projects from fiscal year 2004 (2005)
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Zia, L.L.: new projects and a progress report : ¬The NSF National Science, Technology, Engineering, and Mathematics Education Digital Library (NSDL) program (2001)
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