WHO technical report series, ISSN 0512-3054 905
vi, 109 s. : tab., grafy, mapy ; 22 cm
WHO technical report series, ISSN 0512-3054 905
vi, 109 s. : tab., grafy, mapy ; 22 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