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Rudolf Steiner bezeichnete die erste der drei übersinnlichen Erkenntnisstufen der Anthroposophie als Imagination
Prokofieff
Jacques de Jaager
von Rudolf Grosse
Projective Geometry and Line Geometry 3650 Rudolf Steiner bezeichnete die ersteThis book is a contribution to visual geometry, mainly three dimensional projective geometry and line geometry. There may be no better way to get deeply involved in spatial geometry than in exercising the skills of visual representation by the means of synthetic geometry. Thus I have adopted the synthetic method, which forms a characteristic feature of this presentation. von Renatus Ziegler
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