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\bibitem{Al-Emam_etal2019} {\textquotedblleft}\textit{Evaluation of polyvinyl alcohol{\textendash}borax/agarose (PVA{\textendash}B/AG) blend hydrogels for removal of deteriorated consolidants from ancient Egyptian wall paintings}{\textquotedblright}. Al-Emam E, Motawea AG, Janssens K, Caen J, Heritage science \textbf{7}, 22 (2019).   http://doi.org/10.1186/S40494-019-0264-Z

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