@book{46646,
	author = {Mukhtār, Mahmūd. and ʻUmar, Maḥmūd Amīn,},
	title = {al-Ṭabīʻah al-ʻamalīyah.},
	publisher = {Dār al-Nahḍah al-ʻArabīyah},
	year = {[1963]},
	address = {[Cairo]}
}