@book{78416,
	author = {Williams, R. J. and Frederiksen, R. A.},
	title = {Manual para la identificación de las enfermedades del sorgo y mijo},
	publisher = {International Crops Research Institute for the Semi-Arid Tropics,},
	year = {1978.},
	series = {Boletín de información},
	address = {Hyderabad, India. :}
}