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- [2] Determination of amino acids in pearl shell by RP-HPLC with OPA pre-column derivatization Lihua Jianyan: Huaxue Fence/Physical Testing and Chemical Analysis Part B:Chemical Analysis, 2000, 36 (03): : 97 - 98
- [3] Determination of amino acids in pearl shell by RP-HPLC with OPA pre-column derivatization Nisha Yanjiu/Journal of Sediment Research, 2000, (02): : 97 - 98