[Objectives] The paper was to study effects of different microbial agents on occurrence of tobacco bacterial wilt. [Methods] Antagonistic strains against Ralsto
1 ObservationChinese oil giants enjoy a two-digitgrowth for the output of natural gastoday,also in the next few years.China has successively discoverednatural
Background: Epidemiological studies have shown inverse associations between geohelminth (intestinal helminth) infection and atopy, leading to the suggestion tha