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(1) Hafez,Tamer, www.pressreader.com/egypt/business-monthly-egypt/20170201/281505045963462 A struggling local industry fails to meet spiking demand, 2017. (2) Leblanc, Rick, www.thebalancesmb.com/an-introduction-to-paper-recycling-4036123 Introduction to paper recycling, 2019 (3) Elzbon, Islam, www.mawdoo3.com/ إﻋﺎدة ﺗدوﯾر اﻟورق ,2015 (4) Rinkesh, www.conserve-energy-future.com/cardboard-recycling.php ,2019 (5) www. earth911.com/recycling-guide/how-to-recycle-cardboard/ (6) Rinkesh, Ibid (7) ﻣﻘﺎﺑﻠﺔ ﺷﺧﺻﯾﺔ ﻣﻊ اﻟﻛﯾﻣﯾﺎﺋﻲ ﺛراء ﺷﻛرى رﺋﯾس ﻗطﺎع اﻟﺑﺣوث واﻟﺗطوﯾر ﺑﺷرﻛﺔ راﻛﺗﺎ ﻟﺻﻧﺎﻋﺔ اﻟورق ﺳﺎﺑﻘًﺎ
(8) Van der Ryn S, Cowan S “Ecological Design”. Island Press, p.18 (1996).
(9) Edward,B “Green Architecture”, Jon Wiley and Sons, London. P76 (2001)
(10) Clive Dilnot, “Design as a Society Significant Activity: An Introduction”, Design studies 3:2. pp.144
(1982)