RT Journal Article
SR Electronic
T1 AAAS Travelers
JF Science
JO Science
FD American Association for the Advancement of Science
SP 650
OP 650
DO 10.1126/science.214.4521.650-b
VO 214
IS 4521
YR 1981
UL http://science.sciencemag.org/content/214/4521/650.3.abstract
AB