Ceylon Standards on recommended scales for Architectural, Engineering and Survey dra wings.
- Colombo q Bureau of Ceylon Standards
- 7p.
STD2310
C.S. 125 : 1971
STD2310
C.S. 125 : 1971
Copyright @ 2015-2021 Library, University of Moratuwa, Katubedda, Moratuwa (10400), Sri Lanka