Can anyone tell me any Free site from which I can download research papers regarding agriculture engineering on sugarcane planter as I'm doing projet of mechanical engineering in developing agricultural machinery. Plz help. I need as much research papers as possible on sugarcane planter of any type. If someone get from some his resource, I'll be thankful. If anyone have someone in foriegn countaries, they have access to download research papers but we have to make account for downloading wich costs money. Plz don't mind of english.