"कर्मणये वाधिकारस्ते मां फलेषु कदाचन । मां कर्मफलहेतुर्भू: मांते संङगोस्त्वकर्मणि" ।।

Sunday, November 01, 2020

Std. Xth Science II ( Ch 4 Environmantal Management )


                                                  Environmental management 10th Science II 

Laxman Singh

Author & Editor

"Winner don't do different things , they do things differently"

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