boulder clay 泥砾土 ; 冰砾泥 ; 漂砾土

boulder clay soil 泥砾土

Hessle boulder clay 赫塞尔泥砾

chaotic boulder clay 混杂漂砾粘土

boulder-clay 泥砾

boulder clay soils 泥粒土壤

red boulder clay 红色泥砾

glacial boulder clay 冰川粘土

boulder r clay 泥砾土