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A PRELIMINARY STUDY ON THE DISTRIBUTION AND ECOLOGICAL ENVIRONMENT OF THE NATURAL RESOURCES OF CHIMONANTHUS PRAECOX IN BAOKANG,HUBEI THE PRESENT STATE OF PRESERVATION OF THE PRECIOUS,RARE AND THREATENED PLANTS IN HUBEI,AS WELL AS THE PROPOSITION FOR STUDYING FURTHER THESE PLANTS Rapid multi-elemental analysis on four precious Tibetan medicines based on LIBS technique ANALYSIS OF THE PRECIOUS RARE AND ENDEMIC PLANTS IN XILING GORGE REGION OF HUBEI THE PRECIOUS RARE AND ENDEMIC PLANTS IN QINLING MOUNTAINS AND THEIR FLORISTIC CHARACTERISTICS ON THE PRECIOUS AND RARE PLANTS IN HUBEI A Preliminary Analysis of the Ecological Characteristics of Five Rare Precious Species of Magnolia Plants Preliminary Study of the Evaluation System of Precious and Endangered Wild Officinal Plants in Changbai Mountains Studies on Growth and Wood Property of Six Precious Timber Species The micromophology observation of rare and precious plant-"wingfruit"elaeagnus Current quality research situation of precious Chinese patent medicine SURVEY OF ECOLOGICAL DISTRIBUTION OF THE PRECIOUS PLANT CRUDE DRUGS IN CHINA Fractal Features of Soil Clusters Under Some Precious Hardwood Stands in the Central Subtropical Region,China A New Early-maturing and Thin Shell Walnut Cultivar ‘Shuangzao’ Techniques for the Seedling Culture of Ulmus laciniata Ecogeographical Distribution of Toona ciliata var. pubescens and Preliminary Observation on its Introduction in Nanjing A Survey of Freezing Harm of Precious Trees in South China