identical unit or proportional unit of the body

time-rock unit =time-stratigraphic unit

a box girder with construction defects

A patching machine on foundry defects

abdominal wall defects

ability defects

acetabular defects

acoustics defects

Alcohol_related birth defects

Analysis of casting defects

Analysis of Defects

anatomical defects

annealing of defects

antisite defects

articular cartilage defects

atrial septal defects

Atrial\ Heart septal defects

basic defects of cartilage

behavioral defects

birth defects