sand—sand juxtaposition
coastal sand and continental shelf sand
concial sand from coarse sand
dike of sand pile and sand quilt
prevent sand and confrol sand
Sand-Blowing and Sand-Filling Ground Leveling
reel-to-reel tape recorder
reel-to-reel tape transport
role-to- role(reel-to-reel)
Abandoned sand excavation land
Accumulated sand permeability