You'll need an NBT data viewer, such as NBT Explorer. You use that to open the agedata_#.dat file, where # is the age number it is. This is in the saves>savename> data folder. in that there's another layer and towards the bottom there is a pages (including the link page and all you specified) and symbols dropdown the biomes used will use the biome id but most of the names seem self explanatory or correlate with the pages.