• Event: The Most Beautiful Books of Slovakia 2016
• Prize: Award of the Ministry of Culture of the Slovak Republic for a Book Design

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• Authors: text: Italo Calvino, translater: Stanislav Vallo, illustrator: Daniela Olejníková, art designer: Palo Bálik
• Publisher: Artforum
• Publication year: 2016
• Printing house: Protisk
• Size: 248 s.; fareb. ilustr.; 22 x 16cm
• ISBN: 978-80-8150-145-6

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• Collection name: Collection of the Most Beautiful Books of Slovakia
• Institute: BIBIANA, International House of Art for Children
• Electronic source: On-line catalogue of the Library of BIBIANA, https://www.kis3g.sk/cgi-bin/gw_48_1_3/chameleon?skin=bin
• Subject: book culture; book illustration; book design; art competitions; prizes
• Format ISBD(M): Neviditeľné mestá = / Italo Calvino ; translater: Stanislav Vallo, illustrator: Daniela Olejníková, art designer: Palo Bálik - Bratislava : Artforum , 2016. - 248 s.; fareb. ilustr.; 22 x 16cm ISBN 978-80-8150-145-6