yamagu.ch

about me

v Bloghttp://yamagu.ch/blog/
t Twitterhttp://twitter.com/yamagutsu
f Facebookhttp://www.facebook.com/shuji.yamaguchi
I Flickrhttp://www.flickr.com/photos/yamagutsu/
l Linkedinhttp://www.linkedin.com/pub/yamaguchi-shuji/9/129/630
g Google+https://plus.google.com/112492198629579177040/posts
d mixihttp://mixi.jp/show_friend.pl?id=2694542
s Skypeyamagutsushuzu