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Ruby Queen Beet Seeds Dark Red Blood Turnip Harvard Mangel - Etsy Norway
M. Mangel, editor. Resource Management: Proceedings of the Second Ralf Yorque Workshop held in Ashland, Oregon, July 23–25,1984. 138 pp. Springer-Verlag, 1985. (Lecture Notes in Biomathematics, No. 61.) Price DM 25.00.