Preferred term
681.4 Optiske instrumenter
Broader concept
Broader conceptNarrower concepts
Narrower concepts.Entry terms
Alternative terms for the concept.- Optiske instrumenter--produksjonsteknologi
Identifier
- ocd00162345
Notation
Code that uniquely identifies a concept within a concept scheme.- 681.4
URI
http://dewey.info/class/681.4/e23/