00593naa#a2200169#i#4500001002200000005001700022011001400039100004100053102000700094200010000101210005100201215001000252608002700262675010000289700001900389856001500408EN\INFRA-M\bibl\5145920240813062212.2##a2500-0489##a20220629b2022####ek#y0engy0150####ca##aRU1#aThe first textbook on descriptive geometry  for secondary vocational educationeJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2022##a5 с.##aJournal article2local##aОбщие вопросы математических и естественных наук. 50#1aSal'kovgN. A.4#anaukaru.ru