AC21 - What does AC21 stand for? The Free Dictionary
References in periodicals archive
Enhancing Coexistence: A Report of the AC21
to the Secretary of Agriculture November 19, http://www.
He presented his findings to the International AC21
Research Festival at the university.
Scientists presented their results during the International AC21
Research Festival, at Warwick University, following a review of sleeping patterns of 28,000 children and 15,000 adults.