Results on central production of charged kaons in sulphur-tungsten int
eractions have been obtained by the WA85 Collaboration. The procedure
used to select K+ and K- particles, identified through their decay to
three charged pions, is described. The m(T) spectra for K+ and K- and
the ratio K+/K-, calculated in the kinematic region p(T) greater than
or equal to 0.9 GeV/c and 2.3 less than or equal to gamma(LAB) less th
an or equal to 3.0, are presented.