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Submitted on: 29 March 2021.
Revised on: 14 May 2021.
Accepted on: 18 June 2021.
___________________Hungarian Journal of Industry and Chemistry
Submitted on: 10 December 2008.
Revised on: 04 January 2009.
Accepted on: 14 February 2009.
___________________Hungarian Journal of Industry and Chemistry
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Submitted on: 30 January 2000.
Revised on: 22 February 2000.
Accepted on: 21 April 2000.
___________________Hungarian Journal of Industry and Chemistry
Submitted on: 21 May 2020.
Revised on: 12 August 2020.
Accepted on: 30 August 2020.
___________________Hungarian Journal of Industry and Chemistry
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