  General classical theories of material fields in an arbitrary Riemann-Cartan
space are considered. For these theories, with the help of equations of
balance, new non-trivially generalized, manifestly generally covariant
expressions for canonical energy-momentum and spin tensors are constructed in
the cases when a Lagrangian contains (a) an arbitrary set of tensorial material
fields and their covariant derivatives up to the second order, as well as (b)
the curvature tensor and (c) the torsion tensor with its covariant derivatives
up to the second order. A non-trivial manifestly generally covariant
generalization of the Belinfante symmetrization procedure, suitable for an
arbitrary Riemann-Cartan space, is carried out. A covariant symmetrized
energy-momentum tensor is constructed in a general form.
