Alergie, ISSN 1212-3536 roč. 5, suppl. 2, 2003
60 s. : grafy, mapy ; 30 cm
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AND or + signifies AND operation (intersection)
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