00584nam a22001577a 4500 181824 181824 20211006161406.0 EN230921 9789390185337 475.00 Mc Graw Hill Agrahari, Ravi P. Environmental, ecology, bio-diversity, climate change & disaster management: for UPSC, IES, IFoS & all state services examination / by Ravi P. Agrahari Chennai Mc Graw Hill 2021 444/1, Sri Ekambara Naicker Industrial Estate, Alapakkam, Porur Chennai 600116 vp. 24cm(pbk) ddc EN AGR