In the case of F-isotropic groups for a global field F, Moore [Mo] com
puted the metaplectic kernel using crucially his theorem of uniqueness
of reciprocity laws. For F-anisotropic G, a variant of Moore's theore
m is, therefore, needed to compute the metaplectic kernel. Such a vari
ant was announced by G. Prasad [GP1] (in 1986) and here we give the de
tails.