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Ways to Select Research Subjects on Processing Chinese Materia Medica Ponderat ion over modernizat ion of research and development for Chinese patent medicine Studies on Evaluation and Screening of Cold Resistance During Seedling Stage in Eighteen Species or Varieties of Spiraea Salt tolerance evaluation of cotton (Gossypium hirsutum) at its germinating and seedling stages and selection of related indices. Agricultural landscape preferential model from subjective preference and spatial landscape index: A case study of the characteristics of 11 agricultural landscape partitions in Beijing Ecological restoration economics A study on ecological compensation standard for Zaoshi Water Conservancy Project based on the idea of ecological footprint GENERAL DESIGN FOR ESTABLISHING THE NATION TIMBER CIRCULATION MACRO-CONTROL SYSTEM Studies on Evaluation and Screening of Cold Resistance During Seedling Stage in Eighteen Species or Varieties of Spiraea A discussion about innovation of ecology experiment teaching Right and Responsibility of Participation Subjects in Forest Property Circulation Relationship between Vibration Property of Resonance Board and Subjective Evaluation of Piano Acoustical Quality