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“๚ŽžF ‚RŒŽ 9“๚i…j‚P6Žž`18Žž ๊ŠF Žฉ‘R‚R†Šู‚UŠKƒZƒ~ƒi[Žบi‚U‚O‚Xj u‰‰ŽาF Dr. Ranjan Gupta (IUCAA, Pune India) ”ญ•\‘่–ฺFTheoretical modeling efforts of light scattering by non-spherical grains u‰‰ŽาF Dr. Asoke K Sen (Assam University) ”ญ•\‘่–ฺFThe distribution of background star polarization for some dark clouds