Lazar Volin, "Soviet agriculture under Khrushchev." American Economic Review 49.2 (1959): 15-32 online.
Stephen J. Frese, "Comrade Khrushchev and Farmer Garst: East-West Encounters Foster Agricultural Exchange." The History Teacher 38#1 (2004), pp. 37–65. online.
Aaron Hale-Dorrell, Corn Crusade: Khrushchev's Farming Revolution in the Post-Stalin Soviet Union (2019) PhD dissertation version.
unimelb.edu.au
melgrosh.unimelb.edu.au
"[T]he drought of 1931 was particularly severe, and drought conditions continued in 1932. This certainly helped to worsen the conditions for obtaining the harvest in 1932." Davies, R. W.; Wheatcroft, S. G. (2002). "The Soviet Famine of 1932-33 and the Crisis in Agriculture". In Wheatcroft, S. G. (ed.). Challenging Traditional Views of Russian History(PDF). Palgrave Macmillan. pp. 69–91.