Pencil-beam scanning

https://www.wikidata.org/wiki/Q7162317

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Medicine 48.2M papers	Physics 31.7M papers	Engineering 23.9M papers	Internal medicine 20.6M papers
Quantum mechanics 13.1M papers	Optics 7.9M papers	Surgery 7.6M papers	Radiology 3.1M papers
Structural engineering 2.5M papers		Nuclear physics 1.9M papers
Current
Pencil-beam scanning 1,897 papers
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