Não informado. (1974). Studies in science education. University of Leeds, Center for Studies in Science Education.
Citace podle Chicago (17th ed.)Não informado. Studies in Science Education. Leeds, Inglaterra: University of Leeds, Center for Studies in Science Education, 1974.
Citace podle MLA (8th ed.)Não informado. Studies in Science Education. University of Leeds, Center for Studies in Science Education, 1974.
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