do you know a book or pdf that is worthy of being recommended to your fellow sc/out/s? tell us what it encompasses, why you feel it's great and tell us where to buy it cheaply/download if you want to be especially nice today. please also mention how much of the content is region-specific (e.g. local flora)!

i'm not looking for links to 100+ mediocre/obsolete/wall-of-text/horrid-scanquality pdf collections. i want books/folders/charts that are either a hilariously good read, a solid work of reference, or an enlightening instruction. preferably ones that can be bought/printed.

if you're interested in this topic, chances are you might want to take a look at that infographics thread too:
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