China 'GB/T 17739.6-2012
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 17739.6-2012
Microfilming of technical drawings and other drawing office documents - Part 6: Quality criteria and control of systems for enlargements from 35mm microfilm 技术图样与技术文件的缩微摄影 第6部分:35mm缩微胶片放大系统的质量准则和控制
Issued Date:2012-12-31
Implemented Date:2013-06-01
Issued by:
The Standardization Administration of the People's Republic of China