  It is argued that several papers where SU(3) Clebsch-Gordan coefficients were
calculated in order to describe properties of hadronic systems are, up to a
phase convention, particular cases of analytic formulae derived by Hecht in
1965 in the context of nuclear physics. This is valid for irreducible
representations with multiplicity one in the corresponding Clebsch-Gordan
series. For multiplicity two, Hecht has proposed an alternative which can
provide correct $1/N_c$ sub-leading orders in large $N_c$ studies.
