disk(=disc) harrow

double-action disc harrow

drawn 41-disc harrow

heavy 24-cutaway-disc harrow

heavy duty cutaway disc harrow

heavy duty disc harrow

heavy mounted type A disc harrow

hoe-trac disc harrow

light mounted 24-disc harrow

mounted 24-disc harrow

mounted disc harrow

offset disc harrow

single-row disc-harrow

tandem disc harrow

trailed disc harrow

wheel-controlled offset disc harrow

bio-disc process rotating-disc process

3D optical disc storage

3-position 4-way disc valve