Vseukrainskai͡a set' nabli͡udatel'nykh punktov; instrukst͡sii po organizat͡sii nabli͡udeniı̆ i uchetov bolezneı̆ polevykh i ogorodnykh kul'tur - Strakhov, T. D. (1925)
Keywords: Agricultural research; Methodology; Plant diseases