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original on 2006-03-15.
Retrieved 2009-01-18.
Vitkovskaya 1999
Gelbras 2002, p. 106
Gelbras 2002, p. 104 Lee 2005, p. 81
Larin 2006, p. 50 Lintner, Bertil...
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Domol E
Eurorapi F Finix,
Fodren G Gastech, Gastrazole, Gastrodine,
Gelbra H Happi, Helirab,
Heptadin I
Idizole J Jelgrad, Ji Nuo K L M Mergium, Monrab...