t                                                                               u1citu1                                                                         t                                                                               USGS Digital Spectral Library: r06av12a                                         e                                                                               d1citd1                                                                         t                                                                               USGS Digital Spectral Library: r06av13a                                         e                                                                               e                                                                               bcp                                                                             u99 d 99                                                                        f                                                                               c                                                                               c                                                                               e                                                                               e                                                                               ll                                                                              EX                                                                              f                                                                               