http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Sách gồm 290 bài tập về mạch điện xoay chiều, máy biến áp... Có đáp áp và phần hướng dẫn.
Problems, exercises, etc,Bài tập, vấn đề