http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
John C. Kotz, Paul M. Treichel, Gabriela C. Weaver.
Chemistry,Chemical reactions,Hóa học,Những phản ứng hóa học
Problems, exercises, etc.,Problems, exercises, etc.,Vấn đề, bài tập, v…v...,Vấn đề, bài tập, v…v