The Effect of Balloonflower Root on Content of Vasoactive Intestinal Peptide in different Tissues of Rat with Chronic Obstructive Pulmonary Disease 桔梗对慢性阻塞性肺疾病大鼠不同组织血管活性肠肽(VIP)含量的影响
A Study on the Cause and Prevention of Balloonflower Root to Rot Early Spring 桔梗早春烂根原因与预防的研究