共 50 条
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- [24] GROUP METHOD FOR THE CONCENTRATION OF TRACE QUANTITIES OF PESTICIDES FOR THEIR DETERMINATION IN WATER JOURNAL OF ANALYTICAL CHEMISTRY OF THE USSR, 1980, 35 (12): : 1576 - 1579
- [27] Further evidence that small quantities of copper, manganese and zinc are factors in the metabolism of animals AMERICAN JOURNAL OF PHYSIOLOGY, 1926, 77 (02): : 245 - 255
- [29] POLAROGRAPHIC DETERMINATION OF MICRO-QUANTITIES OF COPPER, LEAD, AND ZINC IN THE PRESENCE OF IRON INDUSTRIAL LABORATORY, 1959, 25 (07): : 817 - 819