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 http://ecet.ecs.uni-ruse.bg/else/subjects/_index.php?cid=237023210741
:
: Ȕ, BG051PO001/07/3.3-02 , , , .

. - .

, , , .

ISBN 978-954-712-486-8
, , , 2010 .
: 10 December 2010
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