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Volume 14 Number 1, August 2012
Abbas Bahaodini Ardakani, Amir Hesam Zaeim Homogeneous Structures on Special Classes of Space-Times
M. K. Ahmed, M. I. El-Saftawy , F. A. Abd El-Salam ,N.Sh. Khalifa The Laser Radiation Pressure as a Perturbing Force in the Space Research
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