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(Smithson 1996, p. 160). Smithson, Robert (1996), Flam, Jack D. (ed.), Robert Smithson: The Collected Writings, Berkeley: University of California Press, OCLC32853450
(Smithson 1996, pp. 169–170). Smithson, Robert (1996), Flam, Jack D. (ed.), Robert Smithson: The Collected Writings, Berkeley: University of California Press, OCLC32853450
(Smithson 1996, p. 165). Smithson, Robert (1996), Flam, Jack D. (ed.), Robert Smithson: The Collected Writings, Berkeley: University of California Press, OCLC32853450
(Smithson 1996, p. 170). Smithson, Robert (1996), Flam, Jack D. (ed.), Robert Smithson: The Collected Writings, Berkeley: University of California Press, OCLC32853450
(Smithson 1996, p. 159) Smithson, Robert (1996), Flam, Jack D. (ed.), Robert Smithson: The Collected Writings, Berkeley: University of California Press, OCLC32853450
(Smithson 1996, p. 158). Smithson, Robert (1996), Flam, Jack D. (ed.), Robert Smithson: The Collected Writings, Berkeley: University of California Press, OCLC32853450
(Smithson 1996, p. 163). Smithson, Robert (1996), Flam, Jack D. (ed.), Robert Smithson: The Collected Writings, Berkeley: University of California Press, OCLC32853450