1. 关键资源 2021-06-01 The deadly virus has decimated pig populations globally, reaching Asia in 2018. This article gives an overview of the origin, transmission, diagnosis, and prevention and coping strategies.
  2. 2004-01-01 This is a book about a remarkable method of handling cattle on the range, written for the benefit of the range rider. Bud Williams teaches a remarkable method called low stree livestock handling.