Rentabelʹnostʹ i nasshirennoe vosproizvodstvo v selʹskom khozi︠a︡ĭstveIvan Daniilovich Laptev, S. I. Semin, Institut ėkonomiki (Akademii︠a︡ nauk SSSR) · First published 1968Open the Tome
Kolkhoznyĭ stroĭ v uslovii︠a︡kh Otechestvennoĭ voĭnyIvan Daniilovich Laptev · First published 1943Open the Tome
