ISBN : ISBN Group Identifiers. - International ISBN Agency, 2009
978-84 - Spain 00 - 14 200 - 699 15000 - 19999 7000 - 8499 85000 - 89999 9000 - 9199 920000 - 923999 92400 - 92999 930000 - 949999 95000 - 96999 9700 - 9999
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