Specification for engineering drawing practice : SLS 409 : 1977

Specification for engineering drawing practice : SLS 409 : 1977 - Colombo Bereau of Ceylon Standards 1977 - 69 p.


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

744:621.7 / SPE