Ozon qatlamini yemirilishi va unga ko'riladigan choralar
Taqdimotlar | Biologiya
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Mualliflik huquqi buzilgan holatdashikoyat qiling!
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Mahsulot tavsifi
This book discusses the functions and importance of the ozone layer, reasons for its depletion, and the effects of CFCs on it
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624 ta
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