Studies on extraction technology of dried rhizome of Rubia cordifolia Study on pharmacognosy of Rubia cordifolia Pharmacognostical Studies on the Root of Rubia cordifolia var.pratensis Nakai and R.syvatica Nakai Determination of Trace Elements in Several Hemostatic Medicinal Plants and Their Boiling Water Exiracts Simultaneous determination of alizarin and rubimaillin in Rubia cordifolia by ultrasound-assisted ionic liquid-reversed phase liquid chromatography Research progress in biology, chemical constituents, and biological activities of Rubia cordifolia Analysis on genetic diversity of Rubia cordifolia from various geographical populations in Henan province α-Glucosidase inhibitors from Rubia cordifolia Study of anthraquinone component from rhizoma of Rubia cordifolia by preparative chromatogram of medium and low press