Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Library Science Information Sources & Services Reference Service
Four basic national models of DDS suggested by Maurice B. Line (et al) in 1980 in a UNESCO document are as follows:
(A). A dedicated centralized collection
(B). Regionally based system
(C). Concentration on a few libraries;
(D). Planned decentralization
(E). Unplanned decentralization
1
A, B, C and D
2
B, C, D and E
3
A, C, D and E
4
A, B, D and E