Full reference OpenMind biblio ref
Al-Ḥassan, Aḥmad, Aḥmad Al-Ḥassan, Maqbul Ahmed, and A. Iskandar. 2001. “Mining And Metallurgy”. In The Different Aspects Of Islamic Culture, Vol. 4: Science and Technology in Islam. Part 2, Technology and Applied Sciences:85-87. Beirut: UNESCO.
{ Aḥmad Al-Ḥassan, Aḥmad Al-Ḥassan, Maqbul Ahmed, A. Iskandar, 2001 #390 }