http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
for experimental use during the school year 1961-62
Contains 3 versions; Green version [no. 1-9] discusses ecology and evolution, Yellow version [no. 10-18] development and genetics, Blue version [no. 19-27] biochemistry and physiology. Each version consists of 3 sections: Text, The laboratory, and The laboratory (Teachers' guide)