R

R, or r, is the eighteenth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''ar'' (pronounced ), plural ''ars'', or in Ireland ''or'' ().

The letter is the eighth most common letter in English and the fourth-most common consonant, after , , and . Provided by Wikipedia
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1381
Charged Particle Optics Theory : : an introduction /
Participants: Groves, Timothy R., [ VerfasserIn ]
Published: 2015.
Superior document: Optical sciences and applications of light
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