8 results
Results are displayed by relevance.
Welsh: tyllau turio
English: boreholes
Welsh: plannu mewn tyllau
English: pit planting
English: oral fissure sealant programme
English: The Borehole Sites and Operations Regulations 1995
English: earth heat exchanger boreholes
Welsh: twll dianc
English: escape hole
English: real-time borehole installation
English: soft piddock-bored substrata