00450nam#a2200157#i#450# EN\RIOR\book\1954 20250301175807.6 20171115d2017####ek#y0engy0150####ca RU Fundamentals of scientific research Textbook Moscow Publishing Center RIOR 2017 238 с. Textbook local Наука. Науковедение. 72 bbk Kosmin Vladimir zh-szf.ru