http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
3. Vẽ hình chiếu thứ 3 và hình chiếu trục đo
Mỗi bài tập có các phần : mục đích và yêu cầu . nội dung bài tập, hướng dẫn thực hiện, các bài tập và bài mẫu
Trần Hữu Quế, Nguyễn Văn Tuấn