Ленинградска ордена Ленина лесотехническа академи С. М. Кнрова
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Application filed by А. М. Цыпук, А. С. Помогаев, В. П. Дмитриев, С. Ф. Орлов, Ленинградска ордена Ленина лесотехническа академи С. М. КнроваfiledCriticalА. М. Цыпук
Priority to SU1784369ApriorityCriticalpatent/SU423425A2/en
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Publication of SU423425A2publicationCriticalpatent/SU423425A2/en