William Nicol (geologist)
[arz] ويليام نيكول
[ca] William Nicol
[de] William Nicol
[eo] William Nicol
[es] William Nicol
[fr] William Nicol (géologue)
[it] William Nicol
[ja] ウィリアム・ニコル
[ko] 윌리엄 니콜
[nb] William Nicol