Title:
Science
Publisher:
American Association for the Advancement of Science (AAAS)
ISSN
(Print):
00368075
ISSN
(Electronic):
10959203
Publication date
(Print):
July
1997
Volume: 277
Issue: 5323
Pages: 197-201
Article
DOI: 10.1126/science.277.5323.197
SO-VID: 8825ecdb-b8d3-4f74-a986-bd81cba550cd