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Please enter your keyword or keyword expression as follows:

Besides just searching on a single keyword, you may enter a logical expression containing keywords and logical operators. Allowable logical operators are limited to AND, OR, and NOT.

example:

           acid AND pollution 

This would return abstracts from the choosen year which have both acid and pollution as keywords. It should be noted that all expressions are evaluated from left to right.

Please set the maximum number of matches to return

             

 

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