Amaranth to Zai Holes, Ideas for Growing Food under Difficult Conditions (ECHO, 1996, 397 p.): 1: Basics of agricultural development

Amaranth to Zai Holes, Ideas for Growing Food under Difficult Conditions (ECHO, 1996, 397 p.)

1: Basics of agricultural development

		(introduction...)
		Background in agricultural development
		Selecting suitable tropical crops
		Resource centers for agricultural development