rokske lujvo

s1=r1 is petrology [science about rock/stone] based on methodology s3.

terdi2, terdi3 and saske2 subsumed. See also derske,kunske,rokci.


In notes:

derske
s1=d1 is soil science [science about earth/soil] based on methodology s3.
terderske
s1=t1 is pedalogy [science about soil composition] based on methodology s3.