I'm not sure of how wise it is to throw knives at people, even if they're your enemy. Seems to me all you are doing is giving them a weapon if they're unarmed.
But for your edification and enjoyment:
Ralph Thorn - Combat Knife Throwing: A New Approach
This isn't exactly a definitive treatise, but it should get your mind working:
Michael Connor - How To Hide Anything
This is a little dated as you can see from some of the images contained inside, but again, its just to give you some ideas:
Michael Connor - Sneak It Through: Smuggling Made Easier
Anyone into electronics?
Tom Larsen - More Bench Tested Circuits: Innovative Circuits For Surveillance and Counter-Surveillance Technicians
More explosives! YAY!
William Wallace - The Revised Black Book: A Guide To Field Manufactured Explosives
And just in case you can't get fuel and need to run your tractor:
FEMA - Construction Of A Simplified Wood Gas Generator For Fueling Internal Combustion Engines In Case Of A Petroleum Emergency