@book{51107,
	author = {ʻUmar, Muḥammad Faraḥāt.},
	title = {Ṭabīʻat al-qānūn al-ʻilmī,},
	publisher = {Dār al-Qawmīyah lil-Ṭibāʻah wa-al-Nashr,},
	year = {1966.},
	address = {al-Qāhirah,},
	note = {Summary in English: p. 282-285.}
}