Now, the ResearchGate site provides the information "self-archiving restrictions" of the journal at the end of the page for each paper listed there. This is convenient to know if we can archive pre-print or post-print version of the paper and under what condition the source of the paper can be posted without going to http://www.sherpa.ac.uk/romeo/ .
As for Japan's ruling of Korea, I think that it was the heavy fact the Japanese should deeply reflect and regret. The following Web page of Colombia University well summarizes the history about it: http://afe.easia.columbia.edu/main_pop/kpct/kp_koreaimperialism.htm
Among many Web sites that describe atomic bombing on Hiroshima and Nagasaki, I recommend you AtomicBombMuesum.org (http://atomicbombmuseum.org/index.shtml). I wish that such a disaster will never happen again.