Bottle neck

https://www.wikidata.org/wiki/Q1202763

Field Hierarchy

Parent
Engineering 25M papers	Materials science 18.5M papers	Geography 13.2M papers	Composite material 8.7M papers
History 8M papers	Archaeology 6.9M papers	Mechanical engineering 5.5M papers	Bottle 17.8k papers
Current
Bottle neck 893 papers
Child

Trends

Notes

History