01308oam 2200397Ia 450 991069741100332120080908120845.0(CKB)5470000002388836(OCoLC)56208011(EXLCZ)99547000000238883620040817d1999 ua 0engurcn|||||||||txtrdacontentcrdamediacrrdacarrierMicrobial and spectral reflectance techniques to distinguish neutral and acidic drainage[electronic resource][Reston, Va.] :U.S. Dept. of the Interior, U.S. Geological Survey,[1999]4 unnumbered pages digital, PDF fileUSGS fact sheet ;FS-118-99Title from PDF title screen (viewed Aug. 17, 2004)."June 1999."Acid mine drainageUnited StatesWaterPollutionUnited StatesAcid mine drainageWaterPollutionGeological Survey (U.S.)GPOGPOOCLCQOCLCGGPOBOOK9910697411003321Microbial and spectral reflectance techniques to distinguish neutral and acidic drainage3101996UNINA