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Hayadan
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phosphogypsum
phosphogypsum
A new source for rare elements
Dr. Moshe Nahamani
March 15, 2019
4 תגובות
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![Oxides of the rare elements gadolinium, praseodymium, cerium, samarium, lanthanum and neodymium [Photo: USDA ARS]](https://www.hayadan.org.il/images/content3/2019/03/RARE-ELEMENTS.jpg)