  The aim of this paper is twofold. One is to introduce the class of harmonic
$\nu$-Bloch-type mappings as a generalization of harmonic $\nu$-Bloch mappings
and thereby we generalize some recent results of harmonic $1$-Bloch-type
mappings investigated recently by Efraimidis et al. \cite{EGHV}. The other is
to investigate some subordination principles for harmonic Bloch mappings and
then establish Bohr's theorem for these mappings and in a general setting, in
some cases.
