@book{12951,
	author = {Ireri, Daniel Mwangi},
	title = {Application of Central Composite Design in Modelling and Optimization of Yields Components of Sweet Potatoes (Ipomea Batatas (L) Using Organic Manure and Phosphate Fertilizer},
	publisher = {Chuka University},
	year = {2019},
	address = {Chuka, Kenya}
}