00608naa#a2200181#i#4500001002200000005001700022011001400039100004100053102000700094200009400101210005100195215001000246608002700256675008800283700002100371700002000392856001400412EN\INFRA-M\bibl\3718420250111055631.6##a2500-3313##a20200420b2020####ek#y0engy0150####ca##aRU1#aHow to build a technical drawing surface with own and falling of shadowseJournal article1#aMoscowcINFRA-M Academic Publishing LLC.d2020##a4 с.##aJournal article2local##aИнженерное дело. Техника в целом. Транспорт. 62#1aNikiforovgV. M.#1aMal'cevagE. A.4#azh-szf.ru