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Materials in non-English languages
Davis, Beth (ed.): Ciphers in the crops. The fractal and geometric circels of 1991 (Sc)
1992, Gateway Books, Bath
Softcover, 88 pages, ill., bibl., index
ISBN: 0-946551-93-6
Softcover, 88 pages, ill., bibl., index
ISBN: 0-946551-93-6