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"To succeed in your mission, you must have single-minded devotion to your goal" - Dr. APJ. Abdul Kalam

About Me

A Portal for High School level Science subject Study Materials - Gowthamraj. V -B.T. Assistant - Marwar Boys Higher Sec. School - Acharapakkam - 7010900331

Saturday, October 5, 2019

இயற்கையான மற்றும் மனிதனால் ஏற்படக்கூடிய மாற்றங்கள்


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