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- [1] RECENT CERTIFICATION OF REFERENCE MATERIALS BY THE COMMUNITY-BUREAU-OF-REFERENCE FOR, IN PARTICULAR, ENVIRONMENTAL-ANALYSIS JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, 1987, 114 (01): : 39 - 44
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- [3] REFERENCE MATERIALS FOR ENVIRONMENTAL-ANALYSIS - SYNTHESIS AND PURIFICATION TESTING OF POLYCYCLIC AROMATIC-HYDROCARBONS ERDOL & KOHLE ERDGAS PETROCHEMIE, 1980, 33 (01): : 46 - 46
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