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Artforum
Artforum Vol. 62, No. 1
Periodicals
Artforum Vol. 6, No. 4
John Coplans, Richards Ruben and Virginia Allen
Vol. 2, No. 9 (March 1964)
Richard Tuttle, Artforum and Robert Mangold
Vol. 20, no. 10 (Summer 1982)