00662naa#a2200193#i#450# EN\INFRA-M\bibl\37184 /en/manage/index 20250324190617.1 2500-3313 20200420b2020####ek#y0engy0150####ca RU How to build a technical drawing surface with own and falling of shadows Journal article Moscow INFRA-M Academic Publishing LLC. 2020 4 с. Journal article local Инженерное дело. Техника в целом. Транспорт. 62 Nikiforov V. M. Mal'ceva E. A. test.editorum.ru /en/manage/index