fly ash
scope note: pulverized fuel ash
broader: liming materials
broader: trace element fertilizers
preferred label: خاکستر پرا @fa
type: Concept

trace element fertilizers
preferred label: کودهای شیمیایی عناصر کم‌مقدار @fa
type: Concept
narrower: fly ash

liming materials
preferred label: ماده آهک‌زنی @fa
type: Concept
narrower: fly ash