7Feature,reason and countermeasure of disease occurrence and prevalence in large-scale pig farm currentlyEpidemic Prevention32-34
8Occurrence pattern and prevalence tendency of police dog diseases in northeast end north china area in recent yearsEpidemic Prevention35-37
13Clinical compared test of several antibiotics an swine enzootic pneumoniaFeedstuff and Veterinary Drug48-50
15Key link of handling a case on animal health supervision and enforcementSupervision and Enforoe53-54
18Cloning and sequence analysis for ORF7 gene of Liaoning genotype PRRSVExperiment and Summarize70-72