@book{67037,
	author = {Riyad, Youssef  M. and Barakat, Heba A.},
	title = {Evaluation of the properties of frankincense powder and its water extracts and the effect of its addition on guava nectar characteristics},
	url = {http://nile.enal.sci.eg/EALE/2020/EJFS/4820/1/159.pdf}
}