@book{59969,
	author = {Technical Centre for Agricultural and Rural Cooperation (CTA)},
	title = {Tools for agriculture: a guide to appropriate equipment for smallholder farmers.--4th ed.},
	publisher = {INTERMEDIATE TECHNOLOGY},
	year = {1992},
	address = {London:},
	edition = {4 th ed.},
	note = {Introduction by Ian Carruthers and Marc Rodriguez}
}