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- [21] DISTRIBUTION OF C-14-ACTIVITY AFTER (CO2)-C-14 APPLICATION ON THE NON STRUCTURAL CARBOHYDRATE IN BROAD LEAVED DOCK (RUMEX-OBTUSIFOLIUS L), WILD CHERVIL (ANTHRISCUS-SILVESTRIS CV HOFFMANN) AND COW PARSNIP (HERACLEUM-SPHONDYLIUM L), AT DIFFERENT GROWTH-STAGES ZEITSCHRIFT FUR ACKER UND PFLANZENBAU-JOURNAL OF AGRONOMY AND CROP SCIENCE, 1980, 149 (06): : 488 - 502