Earlier this week 4000 academic books were released for free, apparently there is quite a lot of GIS books in the mix:
http://feedproxy.google.com/~r/slashgeo/~3/j318KMk-yGU/Hundreds-Free-Geospatial-PDF-Books-National-Academies-Press _______________________________________________ Talk-au mailing list Talk-au@openstreetmap.org http://lists.openstreetmap.org/listinfo/talk-au
