Columbia subject headings:
Crops--Genetics--Research--Soviet Union--History.
Plant breeders--Soviet Union--Biography.
Plant breeding--Soviet Union--History.
Plant geneticists--Soviet Union--Biography.
Political purges--Soviet Union--History.
Science and state--Soviet Union--History.
Vavilov, N. I. (Nikolaĭ Ivanovich), 1887-1943.
Harvard subject headings:
Plant breeders--Soviet Union--Biography.
Plant breeding--Soviet Union--History.
Plant geneticists--Soviet Union--Biography.
Plant genetics--Soviet Union--History.
Political purges--Soviet Union--History.
Science and state--Soviet Union--History.
Vavilov, N. I. (Nikolaĭ Ivanovich), 1887-1943.
Princeton subject headings:
Plant breeders--Soviet Union--Biography.
Plant breeding--Soviet Union--History.
Plant geneticists--Soviet Union--Biography.
Plant genetics--Soviet Union--History.
Political purges--Soviet Union--History.
Science and state--Soviet Union--History.
Vavilov, N. I. (Nikolaĭ Ivanovich), 1887-1943.