J.P.C.Greenlees and H.Sadofsky 

``Tate cohomology of theories with one dimensional coefficient ring.'' 14pp

We calculate the Tate cohomology of vn-periodic complex oriented theories 
whose coefficient ring is one dimensional. For p-groups it is self contained, 
but in general it relies on ``Augmentation ideals of equivariant cohomology 
rings'', above.