@book{92186,
	author = {International symposium on Climatic Risk in Crop Production: Models and Management for the Semiarid Tropics and Subtropics. Brisbane Austrialia, Jul.2-6, 1990.},
	title = {Climatic risk in crop production models and management for the semiarid tropics and subtropics; proceedings.},
	publisher = {CAB},
	year = {1991},
	address = {Oxon}
}