00556aas a2200181 4500 40943 40943 20210217150933.0 ta 210217b sr|p| |||| 00| 0 eng d 0011-3891 oclc 500 CUR Current Science Bengaluru: Current Science Association Fortnightly 2323 Natural sciences & mathematics Chemistry Physics Biology https://www.currentscience.ac.in/php/cissue.php ddc CR 500/ CUR 500/ CUR 1