
INFORMATION PROCESSING - UNPUNCHED PAPER CARDS - SPECIFICATION
出版:International Organization for Standardization

专家解读视频
Deals with card characteristics, testing, measurements, storage and utilization.
NEN 21681 : 1975 - Identical
AS 1244-1972 - Identical
UNI ISO 1681 : 1982 - Identical
AS 1244-1972 - Identical
NEN 21681 : 1975 - Identical
UNI ISO 1681 : 1982 - Identical