Which indexing system was developed by H.P. Luhn of IBM at the International Conference of Scientific Information held in Washington in 1958?
1
KWOC (Key-Word Out-of-Context)
2
KWAC (Key-Word Augmented-in-Context)
3
KWIC (Keyword–in–Context)
4
KWWC (Key-Word-With-Context)
5
Question Not Attempted