Submitted on: 23 June 2008.
Revised on: 09 September 2008.
Accepted on: 26 October 2008.
___________________Egyptian Journal of Agronomy---NATL INFORMATION DOCUMENTATION CENT, ACAD SCIENTIFIC RESEARCH & TECHNOLOGY
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Submitted on: 02 January 1998.
Revised on: 20 April 1998.
Accepted on: 23 May 1998.
___________________Egyptian Journal of Agronomy---NATL INFORMATION DOCUMENTATION CENT, ACAD SCIENTIFIC RESEARCH & TECHNOLOGY
Submitted on: 08 November 2012.
Revised on: 01 February 2013.
Accepted on: 21 March 2013.
___________________Egyptian Journal of Agronomy---NATL INFORMATION DOCUMENTATION CENT, ACAD SCIENTIFIC RESEARCH & TECHNOLOGY
Submitted on: 30 August 2005.
Revised on: 06 October 2005.
Accepted on: 20 October 2005.
___________________Egyptian Journal of Agronomy---NATL INFORMATION DOCUMENTATION CENT, ACAD SCIENTIFIC RESEARCH & TECHNOLOGY