I. Nasir, A., N. Majeed, R. (2009). Some Results on Semi-preopen Sets. , 22(3), 199-204.
A. I. Nasir; R. N. Majeed. "Some Results on Semi-preopen Sets". , 22, 3, 2009, 199-204.
I. Nasir, A., N. Majeed, R. (2009). 'Some Results on Semi-preopen Sets', , 22(3), pp. 199-204.
I. Nasir, A., N. Majeed, R. Some Results on Semi-preopen Sets. , 2009; 22(3): 199-204.


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