  Non-leptonic decays of B mesons into two mesons or meson resonances are
studied on the basis of two versions of simple pole-dominance models involving
scalar, vector, pseudoscalar and axial-vector poles. The results are compared
with those obtained from the usual factorization model and used to obtain
information on strong coupling constants between B meson and one light or one
charmed meson, respectively. These coupling constants are compared to results
from various QCD sum rule calculations.
