International Encyclopaedia of laws - Contracts : Vol. 2, Bulgaria, Burundi, China, Czech Republic, Denmark / General editor Roger Blanpain, editor Jacques H. Herbots.    Alphen aan den Rijn : Kluwer Law International, 2010 . přeruš. str. . ISBN 978-90-654-4941-2   Signatura Z 1978/2
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