Title: Essay on earth art as answer to ecological results of mining
Date: before 1973
Physical Details: Essay : 1 p. : typescript ; 28 x 22 cm.
Creator: Smithson, Robert, 1938-1973
Rights Statement: Current copyright status is undetermined
Citation Information: Robert Smithson. Essay on earth art as answer to ecological results of mining, before 1973. Robert Smithson and Nancy Holt papers, 1905-1987. Archives of American Art, Smithsonian Institution.
Digital ID: 13248