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The SOIL for this project was excavated in and around Siena, from an area of about 15 km diameter.
The result of a mixture of all 22 SOIL samples was a colour, which we know as "Terra di Siena or Siena Brown" from our paintbox.
An Artist book with 24 Original Terragraphics and a text by Anne-Marie Bonnet. Edition of 25 signed and numbered copies.Published in 1990 in an
