00505naa#a2200181#i#450# EN\INFRA-M\bibl\397 /en/manage/index 20250220023804.4 2308-4898 20130725b2013####ek#y0engy0150####ca RUS RU Descriptive Geometry until 1917 Journal article Moscow INFRA-M Academic Publishing LLC. 2013 2 с. Journal article local Sal'kov N. A. test.editorum.ru /en/manage/index