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Children's ideas about ecology 1: theoretical background, d..:

Leach, John ; Driver, Rosalind ; Scott, Philip.
International journal of science education.  17 (1995)  6 - p. 721-732 , 1995
Exemplar:  Zentrale:E03 z pae 638 j/734; Zentrale:Magazin Zs fe 1734