Titlebook: Die Ar?ometer-Methode zur Bestimmung der Kornverteilung von B?den und anderen Materialien; Arthur Casagrande Book 1934 Verlag von Julius S

大喘氣

滋養(yǎng)

Masaatsu Takehara,Naoya Hasegawae review of the pathosystem in Chapter 2 showed that a large amount of research had already been completed before the IWBP was conceived. However, various aspects of the epidemiology of the disease remained poorly understood, meaning that management of the disease was not always based on an adequate knowledge of the pathosystem.