Rusbase USSR Championship Finals

Continuing with Rusbase USSR Championships, I noted that there were '200 Championships of different types (CH)'. Here's how they break down (count, first year on Rusbase, last year, type of championship final):-

42 1934-1993 JUN:Juniors
32 1934-1989 JUT:Juniors team
19 1939-1981 KOL:Farmers
13 1953-1985 KOT:Farmers team
  3 1992-1994 RUS:Championship of Russia (1992+)
32 1961-1993 STD:Young masters
  1 1961-1961 URM:Championship of USSR (1961)
58 1920-1991 URS:Championship of USSR

I suppose KOL & KOT are codes meaning 'kollectiv' or similar. The code URM is a convention to differentiate the two USSR championships held in 1961:-
- 28th Championship of USSR in Moscow, 1961
- 29th Championship of USSR in Baku, 1961