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A C++ object class library has been developed to distribute bidirectional reflectance distribution function (BRDF) models for light scattering from surfaces. Emphasis has been given to those models which are physically-based and which predict the polarization properties of the scattered light. Included in the library are also a number of classes that may be useful to anyone working with polarized light or the optics of thin films. The library is constructed in a manner that enables it to be expanded to include new models.