Extraterrestrial Cause for the Cretaceous-Tertiary Extinction Author(s): Luis W. Alvarez, Walter Alvarez, Frank Asaro and Helen V. Michel Source: Science, New Series, Vol. 208, No. 4448 (Jun. 6, 1980), pp. 1095-1108 Published by: American Association for the Advancement of Science Stable URL: http://www.jstor.org/stable/1683699 . Accessed: 19/09/2013 15:50 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact [email protected]. . American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve and extend access to Science. http://www.jstor.org This content downloaded from 134.173.140.64 on Thu, 19 Sep 2013 15:50:52 PM All use subject to JSTOR Terms and Conditions
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Extraterrestrial Cause for the Cretaceous-Tertiary ExtinctionAuthor(s): Luis W. Alvarez, Walter Alvarez, Frank Asaro and Helen V. MichelSource: Science, New Series, Vol. 208, No. 4448 (Jun. 6, 1980), pp. 1095-1108Published by: American Association for the Advancement of ScienceStable URL: http://www.jstor.org/stable/1683699 .
Accessed: 19/09/2013 15:50
Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at .http://www.jstor.org/page/info/about/policies/terms.jsp
.JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range ofcontent in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new formsof scholarship. For more information about JSTOR, please contact [email protected].
.
American Association for the Advancement of Science is collaborating with JSTOR to digitize, preserve andextend access to Science.
http://www.jstor.org
This content downloaded from 134.173.140.64 on Thu, 19 Sep 2013 15:50:52 PMAll use subject to JSTOR Terms and Conditions