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. 2019 Sep 30;24(19):3544. doi: 10.3390/molecules24193544

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© 2019 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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Slump test results for the analyzed samples (a) and digital photos of the slump for the reference sample (b) and the mixture containing 0.5 wt.% admixture of alumina-lignin hybrid material (c).