Courses are designed by linguists on common proficiency frameworks, but emphasis stays on practical conversation not long ...
Mortality and economic contraction during the 1918-1920 Great Influenza Pandemic provide plausible upper bounds for outcomes under the coronavirus (COVID-19). Data for 48 countries imply flu-related ...
Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback