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The surface coherent Raman scattering (SCRS) effect has been used to obtain Raman spectra of molecules hydrogen-bonded to ZnO surfaces. Two dye laser beams at frequencies $\omega 1$ and $\omega 2$ are coupled into an oriented, polycrystalline ZnO planar waveguide through $SrTiO3$ prisms. The evanescent fields are mixed through the $X(3)$ of the surface species to produce a guided wave at $\omega 3=2\omega 1-\omega 2$ which is subsequently coupled out of the waveguide through a second prism. Using interference effects resulting from particular choices of TE modes for the three fields, signals from submonolayer coverages of surface species can be detected.