Advocacy of trapping as a wildlife and conservation management tool . teaching history of trapping , ethics , and representing the nhta ' s commitment to objectives which are environmentally and socially responsible 作为一个野生动物和保存管理工具套住的倡导。套住的教学历史,道德,并且环境地并且社会上代表nhta的承诺到是的目的负责。