Scandinavian journal of work, environment & health, ISSN 0355-3140 vol. 15, suppl. 1, 1989
94 s. : obr., tab., grafy ; 24 cm
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OR or | signifies OR operation (union)
- negates a single word
" wraps text to signify a phrase
* at the end of a term signifies a right-side expansion
( and ) signify precedence
~N after a word signifies edit distance (fuzziness)
~N after a phrase signifies words distance