natural resources lecture for Environmental Science & Engineering , Competitive exams, IAS,UPSC

Duration: 8:01 Views: 6 389 Submitted: 2 years ago
Description: very easy to understand video lecture on natural resources for environmental sciences and engineering -~-~~-~~~-~~-~- Please watch: "Ozone hole easy to understand lecture" https://www.youtube.com/watch?v=YHLIe... -~-~~-~~~-~~-~-
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