http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
1. Atoms / Don Nardo. -- 2. Cells / Jeanne DuPrau. -- 3. Germs / Don Nardo. 4. Lasers / P.M. Boekhoff, Stuart A. Kallen. -- 5. Tide pools