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Six different models, straightforward extensions of the standard model toSU(3)_c X SU(3)_L X U(1)_X, which do not contain particles with exotic electriccharges are described. Two of the models are one family and four are threefamily models. In two of the three family models one of the families transformsdifferent from the others, and in the other two all the three families aredifferent.Comment: references added; version accepted for publication in Int. J. Mod.  Phys.

ANALYSIS OF SU(3)c⊗SU(3)L ⊗U(1)X LOCAL GAUGE THEORY

ANALYSIS OF SU(3)_c⊗SU(3)_L ⊗U(1)_X LOCAL GAUGE THEORY