Specification for 35 mm microcopying of technical drawings. Part 1. Operating procedures /
Specification for 35 mm microcopying of technical drawings. Part 1. Operating procedures /
British Standards Institution.
- 7 leaves : illustrations ; 33 cm.
- British standard ; BS 4210 : Part 1 : 1977 .
- British standard ; BS 4210 : Part 1 : 1977 .
058009748X
Microphotography--Standards.
058009748X
Microphotography--Standards.
