18, 18 p. : ill. ; 23 x 15 cm. Publisher: ZET; Above. Smyth sewing. Offset printing. Issued in slipcase. Printed in an edition of 100 copies. Numbered and signed by both artists. #44.
A study in averages by Sjoerd Hofstra and Trying to average out by Karen O'Hearn.
Zet Amsterdam, Above New York.
Two works bound side-by-side with their pages interleaved.