Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Library Science Information Sources & Services Information Sources & Types
A document is to be called as Grey Literature when -
A. The document is published with an ISBN.
B. The document is not published commercially.
C. The document is not ephemeral in nature.
D. The document is protected by IPR.
E. The document is not procured through normal book publication channels.
Choose the correct answer from the options given below:
1
A, C and E only
2
B, C and D only
3
C, D and E only
4
B, D and E only