The problem of the origin of the world’s agriculture in the light of the latest investigations

Vavilov, N. I. The problem of the origin of the world’s agriculture in the light of the latest investigations / N. I. Vavilov = [Проблема происхождения мирового земледелия в свете последних исследований / Н. И. Вавилов]. – London, 1931. – 10 p. – (Отд. отт. «Science at the cross roads : papers read to the second International congress of the history of science and technology, by the delegates of the U.S.S.R. (London, June 29th to July 3rd, 1931)»).