Notes:
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"Proceedings of a workshop held in Perignat-les-Sarlieves, Aubiere (France) from 2 to 4 June 1987 under the auspices of COST (European Cooperation in Scientific and Technological Research) - Cost 84 bis, organized with the support of the Commission of the European Communities by INRA, Research Centre of Clermont-Ferrand Theix." - Prelim p.
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