Punching

https://www.wikidata.org/wiki/Q11750728

Field Hierarchy

Parent
Engineering 25.6M papers	Materials science 19M papers	Composite material 8.9M papers	Mechanical engineering 5.6M papers
Metallurgy 5M papers
Current
Punching 100k papers
Child
Perforation 93.1k papers

Trends

Notes

History