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Keywords: Materials in technical drawing.jpg Materials in technical drawing Π Π°ΡΠ΅Ρ ΠΈΠ°Π»Ρ Π² ΡΠ΅Ρ ΡΠ΅Π½ΠΈΠΈ Source ΠΠ½ΡΠΈΠΊΠ»ΠΎΠΏΠ΅Π΄ΠΈΡΠ΅ΡΠΊΠΈΠΉ ΡΠ»ΠΎΠ²Π°Ρ Ρ ΠΡ ΠΎΠΊΠ³Π°ΡΠ·Π° ΠΈ ΠΠ²Ρ ΠΎΠ½Π° 1890 1907 http //www cultinfo ru/fulltext/1/001/007/113/113541 htm Brockhaus and Efron Encyclopedic Dictionary 1890 1907 http //www cultinfo ru/fulltext/1/001/007/113/113541 htm PD-Brockhaus Efron Hatching |