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Federal
SRM 3949 Folate Vitamers in Frozen Human Serum
National Institute of Standards and Technology —
Standard Reference Material 3949 Folate Vitamers in Frozen Human Serum -
Federal
SRM 3949 Folate Vitamers in Frozen Human Serum
Department of Commerce —
Standard Reference Material 3949 Folate Vitamers in Frozen Human Serum