Submitted on: 30 July 2009.
Revised on: 13 August 2009.
Accepted on: 18 August 2009.
PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA
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Submitted on: 22 April 2010.
Revised on: 24 May 2010.
Accepted on: 07 June 2010.
PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA
Submitted on: 15 January 2015.
Revised on: 25 February 2015.
Accepted on: 18 March 2015.
PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA
Submitted on: 24 August 2005.
Revised on: 08 September 2005.
Accepted on: 25 September 2005.
PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA