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MCMICHAEL, Bobbie L. & Hans PERSSON(eds): Plant Roots and their Environment. Proceedings of an ISRR-Symposium August 21st-26th,1988. 1991. (Developments in Agricult. and Managed-Forest Ecol.24). Illustr. with many figs., tables and black & white photos. XI, 649 p. gr8vo. Hardcover. (46263) 212.93
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