首页> 美国政府科技报告 >History of Scientific Study and Management of the Alaskan Fur Seal, 'Callorhinus ursinus', 1786-1964
【24h】

History of Scientific Study and Management of the Alaskan Fur Seal, 'Callorhinus ursinus', 1786-1964

机译:阿拉斯加海豹的科学研究和管理史,'Callorhinus ursinus',1786-1964

获取原文

摘要

The breeding grounds of the Alaskan fur seal were discovered in 1786 when the United States was a nation 10 yr old. The seal population has now become a resource of great value and its future seems assured. The purpose of the present history is to trace the evolution of zoological research on the fur seals, to discuss the origin and development of research ideas and techniques, and to point out the contributions of research to the present management structure.

著录项

相似文献

  • 外文文献
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号