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Instability in students' use of intuitive and Newtonian mod..:

Mildenhall, P. T ; Williams, J. S
International journal of science education.  23 (2001)  6 - p. 643-660 , 2001
Exemplar:  Zentrale:E03 z pae 638 j/734; Zentrale:Magazin Zs fe 1734