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Submitted on: 30 June 1999.
Revised on: 10 August 1999.
Accepted on: 10 September 1999.
___________________CARIBBEAN JOURNAL OF SCIENCE---UNIV PUERTO RICO,
Submitted on: 02 December 2010.
Revised on: 16 January 2011.
Accepted on: 31 January 2011.
___________________CARIBBEAN JOURNAL OF SCIENCE---UNIV PUERTO RICO,
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Submitted on: 24 August 2015.
Revised on: 02 December 2015.
Accepted on: 14 January 2016.
___________________CARIBBEAN JOURNAL OF SCIENCE---UNIV PUERTO RICO,
Submitted on: 29 May 2023.
Revised on: 24 August 2023.
Accepted on: 06 September 2023.
___________________CARIBBEAN JOURNAL OF SCIENCE---UNIV PUERTO RICO,
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Submitted on: 07 February 2025.
Revised on: 01 May 2025.
Accepted on: 12 June 2025.
___________________CARIBBEAN JOURNAL OF SCIENCE---UNIV PUERTO RICO,
Submitted on: 24 August 2022.
Revised on: 02 October 2022.
Accepted on: 29 November 2022.
___________________CARIBBEAN JOURNAL OF SCIENCE---UNIV PUERTO RICO,
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