A graphic flow is a totally minimal flow such that the onlyminimal subsets of the product flow are the graphs of the powersof the defining homeomorphism [2]. We consider flows of theform $(X^{k},T^{L})$, where $(X,T)$ is graphic, $k$ is a positiveinteger, and $L:\{1,\ldots,k\}\to {\Bbb Z}\setminus \{0\}$. It isshown that the isomorphism classes of these flows aredetermined by the cardinality of $L^{-1}(p)$.