Tantalum

• 1. ReferencesPh.D. Natalia Petrovskaya. Fundamentals of the theory of flotation, 2007

  2. https://en.wikipedia.org/wiki/Refractory_metals

  3. https://www.rwmmint.com/products/tantalum

  4. https://en.wikipedia.org/wiki/Heavy_metals

  5. http://forexaw.com

@ Ph.D. Natalia Petrovskaya

October 20, 2016

nataliapetrovsky@gmail.com