SPACE, TIME, SOUND : CONCEPTUAL ART IN THE SAN FRANCISCO BAY AREA: THE 1970S ; (PUBL. AS DOCUMENTATION OF THE EXHIBITION 'SPACE, TIME, SOUND - 1970S: A DECADE IN THE BAY AREA', DEC. 21, 1979 - FEB. 10, 1980 SAN FRANCISCO MUSEUM OF MODERN ART. BY SUZANNE FOLEY. CHRONOLOGY BY CONSTANCE LEWALLEN.