Hình:Blmexcavsm.jpg

Bách khoa toàn thư mở Wikipedia


Public domain This article or image contains material based on a work of a Bureau of Land Management employee, created during the course of an employee's official duties. As a work of the U.S. federal government, such work is in the public domain. See the BLM website and copyright policy for more information.

Các trang sau có liên kết đến tập tin: