//-->
Razdumʹja o zemle o chlebe
Malʹcev, Terentij S., (1985)
Grain yields under Gorbachev : weather, variability and trend
Desai, Padma, (1991)
Soviet government grain procurements, dispositions, and stocks, 1940, 1945-1963
Nimitz, Nancy, (1964)