  A finite poset $P$ is called "simplicial", if it has the smallest element
$\hat{0}$, and every interval $[\hat{0}, x]$ is a boolean algebra. The face
poset of a simplicial complex is a typical example. Generalizing the
Stanley-Reisner ring of a simplicial complex, Stanley assigned the graded ring
$A_P$ to $P$. This ring has been studied from both combinatorial and
topological perspective. In this paper, we will give a concise description of a
dualizing complex of $A_P$, which has many applications.
