Shukla, SiddhantSiddhantShukla2025-10-132025-10-132025-07-019.78E+12https://www.penguin.co.in/book/longform-2025/https://repository.iitgn.ac.in0/handle/IITG2025/33064en-USBook Chapterpp. 220-242123456789/511