000			00310nam a2200121Ia 4500
008			241128s2023 xx 000 0 und d
041			_aeng
100			_aSingh Y K
245			_aEnvironmental Science
260			_aDelhi _bNew Age International publication London _c2023
300			_a318p
650			_aComputer
999			_c351827 _d351827