  We give a complete enumeration of all combinatorial 3-manifolds with 10
vertices: There are precisely 247882 triangulated 3-spheres with 10 vertices as
well as 518 vertex-minimal triangulations of the sphere product $S^2\times S^1$
and 615 triangulations of the twisted sphere product $S^2_\times_S^1$.
  All the 3-spheres with up to 10 vertices are shellable, but there are 29
vertex-minimal non-shellable 3-balls with 9 vertices.

Combinatorics;Geometric Topology