Need some information about foreign MTG cards

[Goblin Hero]

I'm adding non-english cards to MA. My only source is gatherer. But I can't trust him. For example it shows that Coldsnap exists in 9 languages (no pictures). I'm sure that there were no Coldsnap in Russian as gatherer shows. I have suspicion about the all other sets.
So I need basic info: set + list of languages it was printed in. Any help appreciated.
P.S. Found strange thing. According to gatherer Japan Aether membrane http://gatherer.wizards.com/Pages/Card/Details.aspx?printed=true&multiverseid=140829 is the only Aether membrane with flavor text. But again, no picture, no confirmation.

[PresetM]

Hello Roman,

you're right, Gatherer isn't very accurate.
To start with you project, you should use at first:
http://www.magiclibrarities.net/sets.html
All information on this site is verified. Unfortunately it only covers the expansions until 8th Edition.

Second source for you should be the tree we use for our scans. It is correct with one exception: starting with Eventide there's only one Chinese language (Gatherer named it as 'Chinese standard'. I don't know if this name is correct.).
Additional the latest Duel decks Phyrexia vs. The Coalition exists in Japanese too (scans will come when my Japanese mate will send me the next package).

hope that helps a little...

Hans-Dietrich

P.S.: What about our deal? I have reserved a bunch of promo cards and Fallen Empires since over one year...