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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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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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Reitsma, R.; Marshall, B.; Chart, T.: Can intermediary-based science standards crosswalking work? : some evidence from mining the standard alignment tool (SAT) (2012)
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