Izbrannye sochinenii︠a︡ /
Tkachev, Petr Nikitich.
Kozʹmin, Boris Pavlovich.
Zug :  Inter Documentation Company, 
[1975]
Vols. 1 and 4 were published as Nos. 2-3, 8-9 of Istoriko-revoli︠u︡t︠s︡ionnai︠a︡ biblioteka.
Vols.2 and 3 have the title Izbrannye sochinenii︠a︡ na sot︠s︡ialʹno-politicheskie temy v chetyrekh tomakh, Vols. 5 and 6 have Izbrannye sochinenii︠a︡ na sot︠s︡ilʹno-politicheskie temy v semi tomakh.
Originally published: Moskva: Izd-vo Vses. ob-va polit-katorzhan i ssylʹno-poselent︠s︡ev, 1932-37, in 6 v.