Soils map attributes in SPEARFISH dataset

[Markus Neteler]

Hi there,

does anybody know (I am shure!) how to understand the 
soils map attributes in SPEARFISH sample dataset?
As we have a totally different system in Germany I
do not have books about this taxonomy.

It reads

soils:
Bba
Vba
...

If any table for r.reclass etc. is already available to 
generate some soil characterizing maps from the "plain" soil map 
using the soil's map legend I would be glad.
I want to create some examples on "how to work with GRASS" in
soil science.

Thanks in advance

 Markus Neteler