Volume 60, Issue 141, April 2014, Pages 73-86
ABUESSAILLA, A.A.; ISMAIL, A.A.; AGAB, H.
Volume 59, Issue 139, October 2013, Pages 34-38
AGAB, H.; S.M. ELBASHIR; A.E. MOHAMED
Volume 59, Issue 138, July 2013, Pages 32-37
ABUESSAILLA, A.A.; ISMAIL, A.A.; AGAB, H.