A
It is similar in shape to the Ancient Greek letter alpha, from which it derives. The uppercase version consists of the two slanting sides of a triangle, crossed in the middle by a horizontal bar. The lowercase version is often written in one of two forms: the double-storey and single-storey . The latter is commonly used in handwriting and fonts based on it, especially fonts intended to be read by children, and is also found in italic type.
In English, ''a'' is the indefinite article, with the alternative form ''an''. Provided by Wikipedia
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2article bibliotecaUNESCO
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3Journal Contribution bibliotecaUNESCO
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4Journal Contribution bibliotecaUNESCO
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6conference_item bibliotecaUNESCO
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9Texto bibliotecaFAO IT
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16Digital revistaSCIELO
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17Anais e Proceedings de eventos bibliotecaEMBRAPA
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