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1993-96 Fingertip Tingling - Fingerspitzengefuehl
1997 - Takt- und Fingerspitzengefuehl - Fingertip-Tingling
Published by the Stadtmuseum Cologne and Weidle Publishing Bonn Germany, 1996,. introduction by Michael Euler-Schmidt, essay by Roland Scotti, 80 pages (44 in color) hardcover, Weidle Verlag ISBN 3- 931135-20-9