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مصادر
Phosphorus / Encyclopaedia Britannica
https://www.britannica.com/sci....ence/phosphorus-chem
Facts About Phosphorus
https://www.livescience.com/28932-phosphorus.html
'The Devil's element': the da.rk side of phosphorus
https://www.theguardian.com/sc....ience/blog/2017/oct/
Hennig Brandt and the Discovery of Phosphorus
https://www.sciencehistory.org..../distillations/henni
The world's food supply depends on Morocco. Here's why
https://www.pri.org/stories/20....13-11-21/worlds-food
Morocco's OCP aims to dominate phosphate industry
https://www.northernminer.com/....subscribe-login/?id=
Phosphate Rock
https://mineralseducationcoali....tion.org/minerals-da
https://www.sciencedirect.com/....topics/earth-and-pla