Puzzles
The winner of this month's crossword and Su Doku competitions will be published next month. For your chance to win a £25 book voucher, please send your completed entries to:
Chemistry World
Royal Society of Chemistry
Thomas Graham House
Science Park
Milton Road
Cambridge
CB4 0WF
UK
Fax: +44 (0)1223 426017
by 12 June.
Chemistry World
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