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Projective Geometry: Creative Polarities in Space and Time: Whicher, Olive: 9781855843790: Amazon.com: Books
The Plant between Sun and Earth, and the Science of Physical and Ethereal Spaces: George Adams, Olive Whicher, Ehrenfried Pfeiffer: 9780394712314: Amazon.com: Books
Olive Whicher HB Book Projective Geometry Rudolf Steiner Press 1971 | eBay