00474nam a2200193Ia 4500 OSt 20251128101650.0 250729s2006 xx 000 0 und d 978-9325976153 AL eng 371.333 AGGE Aggarwal J C 225235 Essentials of educational technology:teaching learning New Delhi 2006 463p Education 225236 ddc BED 236814 236814 0 0 0 0 AL AL 2025-07-29 Sita Book House 195.00 0 371.333 AGGE BED02133 2025-07-29 16:55:07 195.00 2025-07-29 BK