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100   $a20141123d1984      ua             0
101 0 $aeng
135   $aurmn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aEcology and distribution of major diatom ecotypes in the southern Fort Union Coal Region of Montana /$fby L.L. Bahls, E.E. Weber, and J.O. Jarvie
210  1$aWashington :$cDepartment of the Interior, U.D. Geological Survey,$d1984.
215   $a1 online resource (iv, 151 pages) $cillustrations, maps
225 1 $aGeological Survey professional paper ;$v1289
300   $a"Major diatom ecotypes are systematically described in terms of taxonomy and morphology, abundance, ecology, distribution, and water-quality variables."
320   $aIncludes bibliographical references (pages 150-151).
606   $aDiatoms$xEcology$zMontana$zFort Union Coal Region
606   $aWater quality bioassay$zMontana$zFort Union Coal Region
606   $aPlant indicators$zMontana$zFort Union Coal Region
606   $aDiatoms$xEcology$2fast
606   $aPlant indicators$2fast
606   $aWater quality bioassay$2fast
607   $aMontana$zFort Union Coal Region$2fast
615  0$aDiatoms$xEcology
615  0$aWater quality bioassay
615  0$aPlant indicators
615  7$aDiatoms$xEcology.
615  7$aPlant indicators.
615  7$aWater quality bioassay.
700   $aBahls$b Loren L.$01388425
702   $aWeber$b E. E.
702   $aJarvie$b J. O.
712 02$aGeological Survey (U.S.),
801  0$bCOP
801  1$bCOP
801  2$bOCLCO
801  2$bOCLCF
801  2$bGPO
906   $aBOOK
912   $a9910709637003321
996   $aEcology and distribution of major diatom ecotypes in the southern Fort Union Coal Region of Montana$93438980
997   $aUNINA