Books vs U - What's the difference?
books | u |
(pluralonly, accounting) Accounting records.
(book)
The twenty-first letter of the .
symbol for unified atomic mass unit
).
(label) up quark
Image:Latin U.png, Capital and lowercase versions of U , in normal and italic type
Image:Fraktur letter U.png, Uppercase and lowercase U in Fraktur
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