'' Investigating the influence of motivation on students' conceptual learning outcomes in web-based vs classroom - based science teaching contexts'', (14h 51min, jan 1, 2010 y – 11h 30min, sep 7, 2011 y)
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Date:
14h 51min, jan 1, 2010 y
11h 30min, sep 7, 2011 y
~ 1 years and 8 months