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SLS 409: 1977 ENGINEERING DRAWING PRACTICE SLS 409 ENGINEERING DRAWING SRI LANKA STANDARDS (Topical Term)

Preferred form: SLS 409: 1977 ENGINEERING DRAWING PRACTICE SLS 409 ENGINEERING DRAWING SRI LANKA STANDARDS

Machine generated authority record.

Work cat.: (ISURu)109853: Specification for engineering drawing practice : SLS 409 : 1977, 1977