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Developing a new teaching approach for the chemical bonding..:

Nahum, Tami Levy ; Mamlok-Naaman, Rachel ; Hofstein, Avi.
Science education.  91 (2007)  4 - p. 579-603 , 2007
Exemplar:  Zentrale:E03 z pae 638 j/090; Zentrale:Magazin Zs fe 1901