7 Billion and Counting
Science (American Association for the Advancement of Science), 2011-07, Vol.333 (6042), p.562-569 [Peer Reviewed Journal]Copyright © 2011 American Association for the Advancement of Science ;ISSN: 0036-8075 ;EISSN: 1095-9203 ;DOI: 10.1126/science.1209290 ;PMID: 21798935
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