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Priority to PL26342886ApriorityCriticalpatent/PL149594B1/en
Publication of PL263428A1publicationCriticalpatent/PL263428A1/en
Publication of PL149594B1publicationCriticalpatent/PL149594B1/en
Herbicides comprising 4-oxo-3-benzoyl-valerolactone and thiolactone derivatives as active substance and process for preparing the active substances and their intermediaries