The copy on IMSLP is just a scanned PDF so it has defied easy translation, but now that Google can translate mere images of text, i tried it.... for the first three pages.
Each translation has its pluses and minuses. I was mostly interested in his explanation of the pp<fff>pp exercise and its permutations.
"leave dad behind" is a surprise.
Russian pg 1

German pg 1

Russian pg 2

German pg 2

Russian pg 3

German pg 3
