Some articles about improvised weapons:
Armas Improvisadas I & II: http://www.file2box.net/dumbfspvjj16
Armas Improvisadas III: http://www.file2box.net/d4mgkdgldrpc
Improvised Weapons Site: This one is a whole HTML website compressed in a Zip File:
http://www.file2box.net/uyct5448midm