Columbia subject headings:
Collective farms--Soviet Union.
Kommunisticheskai͡a partii͡a Sovetskogo Soi͡uza--Party work.
Machine-tractor stations.
Harvard subject headings:
Kommunisticheskai︠a︡ partii︠a︡ Sovetskogo Soi︠u︡za--Party work.
Princeton subject headings: