Listener, 40: 874–75 – contemporary commentary by a British evolutionary biologist (pdf format) Letter from Lysenko's parents to Stalin, Pravda, 3 January 1936.
Listener, 40: 874–875 — contemporary commentary by a British evolutionary biologist (pdf format) Letter from Lysenko's parents to Stalin, Pravda, ngày 3 tháng 1 năm 1936.