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STERNE UND WELTRAUM - A POPULAR MAGAZINE DEVOTED TO SCIENCE AND ITS USE IN SCHOOL TEACHING
In: ASTROPHYSICS AND SPACE SCIENCE LIBRARY; ORGANIZATIONS AND STRATEGIES IN ASTRONOMY VOLUME 7, S. 439-448
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In: ASTROPHYSICS AND SPACE SCIENCE LIBRARY; ORGANIZATIONS AND STRATEGIES IN ASTRONOMY VOLUME 7, S. 439-448