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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623by Bashkireva, T, Bashkireva, A, Severin, A, Morozov, AGet access
Published in IOP Conference Series: Earth and Environmental Science (2019)
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624by Borodulin, A, Kalinnikov, A, Kharaev, A, Shcherbin, SGet access
Published in IOP Conference Series: Earth and Environmental Science (2019)
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625
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627by Pinela, A. M., Borrell, A., Aguilar, A.Get access
Published in Rapid Communications in Mass Spectrometry (2015)
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628
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629by Sinyutkina, A. A., Gashkova, L. P., Kharanzhevskaya, Yulia A., Magur, M. G., Voistinova, E. S., Ivanova, E. S., Chudinovskaya, L. A., Khaustova, A. A., Maloletko, A. A.Get access
Published in IOP Conference Series: Earth and Environmental Science (2018)
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630by A.I. Zaytsev, E.N. Pelinovsky, D. Dogan, B. Yalciner, A. Yalciner, A.A. Kurkin, A.A. MoskvitinGet access
Published in Physical Oceanography (2020)
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631by A. N. Veres, A. A. Ekaykin, D. O. Vladimirova, A. V. Kozachek, V. Ya. Lipenkov, A. A. SkakunGet access
Published in Ice and Snow (2018)
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632by Veres, A. N., Ekaykin, A. A., Vladimirova, D. O., Kozachek, A. V., Lipenkov, V. Ya., Skakun, A. A.Get access
Published in Ice and Snow (2018)
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633
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634by I. D. Streletskaya, A. A. Pismeniuk, A. A. Vasiliev, E. A. Gusev, G. E. Oblogov, N. A. ZadorozhnayaGet access
Published in Frontiers in Earth Science (2021)
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635by Biryukov, V.Y., Faustova, M.A., Kaplin, P.A., Pavlidis, Y.A., Romanova, E.A., Velichko, A.A.Get access
Published in Palaeogeography, Palaeoclimatology, Palaeoecology (1988)
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636by Ramos, A.A., Weydmann, A., Cox, C.J., Canário, A.V.M., Serrão, E.A., Pearson, G.A.Get access
Published in Marine Genomics (2015)
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637by Streletskaya, I. D., Pismeniuk, A. A., Vasiliev, A. A., Gusev, E. A., Oblogov, G. E., Zadorozhnaya, N. A.Get access
Published in Frontiers in Earth Science (2021)
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638by Vladimirov, I N, Frolov, A A, Silaev, A V, Sofronov, A P, Kobylkin, D V, Sorokovoi, A AGet access
Published in IOP Conference Series: Earth and Environmental Science (2019)
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639by Comte, Katia, Å Abacká, Marie, Carré-Mlouka, Alyssa, Elster, Josef, Komárek, JiÅÃGet access
Published in FEMS Microbiology Ecology (2007)
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