Starting from January 1, 2010, National Science Library of the Chinese Academy of Sciences subscribes and provides access to PNAS（Proceedings of the National Academy of Sciences）

Proceedings of the National Academy of Sciences of the United States of America（ISSN：0027-8424）（PNAS）is as famous as Nature, Science.

PNAS is open to all staff of the Chinese Academy of Sciences. Its access web address is:

http://www.pnas.org/

Access Time：From January 1, 2010 to December 31, 2012

January 11, 2010