4 prototypen (4 prototypes), 1970 and blaues dreieck (blue triangle), 1969.
images from zwiner and wirth.
just some thoughts following a conversation ROLU.
4 prototypen (4 prototypes), 1970 and blaues dreieck (blue triangle), 1969.
images from zwiner and wirth.
just some thoughts following a conversation ROLU.
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