[ausjulius]

http://www.flickr.com/photos/jailusser/2448057675/
here you can some of double and single edged hooked knives..
http://www.flickr.com/photos/meanestindian/90515979/

http://www.flickr.com/photos/gnibel/867502568/
http://www.flickr.com/photos/harshadsharma/331057387/
http://www.flickr.com/photos/mkuram/3588383329/
http://www.flickr.com/photos/mattlogelin/114697722/
http://www.flickr.com/photos/yameza/1334875092/
http://www.flickr.com/photos/mattlogelin/824301545/
looks homemade from an old saw that one... but it is the correct shape of a normal indian working knife...
a non indian tool found in parts of india populated by tribal folks..
http://www.flickr.com/photos/lindadevolder/3437218977/
more simple knives

http://www.flickr.com/photos/lennymika/2573192846/