  This paper explains how, following the representation of 3D crystallographic
space groups in Clifford's geometric algebra, it is further possible to
similarly represent the 162 so called subperiodic groups of crystallography in
Clifford's geometric algebra. A new compact geometric algebra group
representation symbol is constructed, which allows to read off the complete set
of geometric algebra generators. For clarity moreover the chosen generators are
stated explicitly. The group symbols are based on the representation of point
groups in geometric algebra by versors (Clifford monomials, Lipschitz
elements).
  Keywords: Subperiodic groups, Clifford's geometric algebra, versor
representation, frieze groups, rod groups, layer groups .
