Columbia subject headings:
Philosophy of nature.
Science--Philosophy.
Scientists--Soviet Union--Biography.
Vavilov, N. I. (Nikolaĭ Ivanovich), 1887-1943--Philosophy.
Harvard subject headings:
Philosophy of nature.
Science--Philosophy
Vavilov, N. I. (Nikolaĭ Ivanovich), 1887-1943--Philosophy.
Princeton subject headings:
Science--Soviet Union--Methodology.
Science--Soviet Union--Philosophy.
Vavilov, N. I. (Nikolaĭ Ivanovich), 1887-1943--Philosophy.