PREFERRED TERM
سیستمهای تلگراف
TYPE
-
http://www.irandoc.ac.ir/onto/irandoc-meta/Concept
BROADER CONCEPT
NARROWER CONCEPTS
RELATED CONCEPTS
IN OTHER LANGUAGES
telegraph systems
English
TELEGRAFO
URI
http://www.irandoc.acir/onto/irandoc/NEMA0003593