Search

Search terms are automatically joined by AND and truncated with *

use / for OR
e.g. lake / ocean / sea

use ! for NOT
e.g. water ! lake

use " " to search for a phrase
e.g. "acid precipitation"

use >, <, >=, <= for greater or less than
e.g. >= 2007 finds dates from 2007 onwards

use : to search a range
e.g. 2001:2012, example:sample

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