G-Series Geomorph Set

I've finally assembled the 12 G-series geomorphs (Gears and Machinery into a PDF available for download from my Google Docs. I'm not sure if I'll expand the B-series or S-series collections, but I've already done G13, so I'm expecting to add another 6 or 12 geomorphs to this PDF at some point in the future. But for now, there's a full dozen in a three-page geomorph. Licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License, as are the other two geomorph collections.