Exhibition catalogue published in conjunction with show held at the Centro de Arte Reina Sofía, Madrid, March 1 - May 8, 1989 and the Palau de la Virreina, Barcelona, May 25 - July 16, 1989. Preface by Mark Rosenthal and Robert Storr. Essays by Rosenthal, Carrie Rickey, Francisco Calvo Serraller, and Dore Ashton. Includes checklist, chronology, bibliography, and exhibition history. Printed in color and black-and-white. Texts in Spanish and English.