00649nam a22001817a 4500 192248 192248 20220915111138.0 B-745524 9789389176032 295.00 B-745524 OakBridge General Studies Series Part 7 ; Environment and Ecology For Civil Services (Preliminary) Examination Haryana OakBridge Publishing 2019 M 35, 1st Floor, Old DLF, Gurugram, Haryana 122001 91 1244305970 info@oakbridge.in 228p 24cm.(pbk) ddc EN ENV