00512nam a22001817a 4500 86639 86639 NITIL 20211109161447.0 211109b ii ||||| |||| 00| 0 eng d 9789383980499 Rs.800.00 NITIL NITIL 23rd ed. 381.142 S617E Singh, Nistha 4003 E-Commerce by Dr. Nistha Singh New Delhi Shivank Prakashan 2021 viii,256p. ;23cm. COMMERCE; ELECTRONIC COMMERCE 4004 ddc BKS