RT Journal Article
SR Electronic
T1 World-Power and Evolution
JF Science
JO Science
FD American Association for the Advancement of Science
SP 211
OP 213
DO 10.1126/science.50.1287.211-a
VO 50
IS 1287
A1 Schuchert, Charles
YR 1919
UL http://science.sciencemag.org/content/50/1287/211.2.abstract
AB