00545nam a22001817a 4500 181669 181669 20210930120458.0 EN230921 9789384761141 250.00 Lucent Publication 000 Sunil Kumar Singh Lucent's general science / by Sunil Kumar Singh [and] R.P. Suman Patna Lucent Publication 2021 New Bypass Road, Ashochak Patna 800030 vp.: ill. 27cm(pbk) R.P. Suman ddc EN 000 LUC