00556nam a22001577a 4500 LDD 20260618092334.0 260618b |||||||| |||| 00| 0 eng d IGNOU Library Barre, Prabhudas Author 21592 Study on the perceived effectiveness of OER adoption by open university and dual mode institutions in the states of Andhra Pradesh and Telangana/ Prabhudas Barre New Delhi; IGNOU, 2024. xxii, 246p. PhD. Thesis in Distance Education ddc TH 0 0 ddc 0 0 201733 LDD LDD PGRRL 2026-06-18 L&DD 0 374.4 B230S TH001258 2026-06-18 2026-06-18 TH 200799 200799