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Noncanonical yet Hamiltonian descriptions are presented of many of the non‐dissipative field equations that govern fluids and plasmas. The dynamical variables are the usually encountered physical variables. These descriptions have the advantage that gauge conditions are absent, but at the expense of introducing peculiar Poisson brackets. Clebsch‐like potential descriptions that reverse this situations are also introduced. (AIP)
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P. Morrison (1982) studied this question.