A
A, or a, is the first letter and the first vowel letter of the Latin alphabet, used in the modern English alphabet, and others worldwide. Its name in English is ''a'' (pronounced ), plural ''aes''.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 can be written in 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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126by Ananin, A A, Aiurzanaeva, I AGet access
Published in IOP Conference Series: Earth and Environmental Science (2021)
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127by V. A. Melkiy, A. A. VerkhoturovGet access
Published in Proceedings of the International conference “InterCarto/InterGIS” (2017)
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128by V. A. Melkiy, A. A. VerkhoturovGet access
Published in Proceedings of the International conference “InterCarto/InterGIS” (2017)
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129by Arkhipkin, A. I., Fetisov, A. A.Get access
Published in Journal of the Marine Biological Association of the United Kingdom (2000)
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130by Gololobova, A G, Gabysheva, A AGet access
Published in IOP Conference Series: Earth and Environmental Science (2019)
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134by Luginina, E A, Sorokina, A AGet access
Published in IOP Conference Series: Earth and Environmental Science (2021)
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136by Golyeva, A A, Prokashev, A MGet access
Published in IOP Conference Series: Earth and Environmental Science (2020)
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140by Tsukerman, V A, Kozlov, A AGet access
Published in IOP Conference Series: Materials Science and Engineering (2020)
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