Key content and formulation of national Chinese materia medica resources survey at county level Model innovation of traditional Chinese medicine resources survey pilot work in Anhui province STUDY ON SPATIAL PATTERN OF CHEMICAL ELEMENTS FOR CASTANOPSIS FARGOSII FOREST IN NORTHEASTERN GUANGXI INVESTIGAIONS ON LEAVES OF CYMBIDIUM,PAPHIOPEDILUM,DENDROBIUM UNDER SCANNING ELECTRON MICROSCOPE Key-point investigation list of traditional Chinese medicinal materials for national survey of Chinese material medica resources Analysis of questionnaire and clinical characteristics of 2 000 cases of dysmenorrheal Suitable investigation method of exploration and suggestions for investigating Chinese materia medica resources from wetland and artificial water of Hongze Lake region Studies on the resources survey methods of Panax notogingseng based on remote sensing Development of rapid setting-drying device for herbarium specimens and its application in survey of Chinese materia medica resources in Anhui