LEADER 01577nem  2200433   450 
001 9910713498203321
005 20200415091200.0
035   $a(CKB)5470000002500667
035   $a(OCoLC)1150883712
035   $a(EXLCZ)995470000002500667
100   $a20200415d1982      ua              
101 0 $aeng
120   $aa||||||||||||
121   $a|||||||||
124   $bd
135   $aur|||||||||||
181   $ccri$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 10$aMap showing the potentiometric surface of the Magothy aquifer in southern Maryland, September, 1981 /$fby Frederick K. Mack, Judith C. Wheeler, and Stephen E. Curtin ; prepared in cooperation with Maryland Geological Survey and Maryland Energy Administration
210  1$aTowson, Maryland :$cUnited States Department of the Interior, Geological Survey,$d1982.
215   $a1 online resource (1 map)
225 1 $aOpen-file report ;$v82-257
300   $aRelief shown by contours and spot heights.
606   $aGroundwater$zMagothy Aquifer$vMaps
607   $aMagothy Aquifer$vMaps
608   $aMaps.$2lcgft
615  0$aGroundwater
702   $aMack$b Frederick K.
702   $aWheeler$b Judith C.
702   $aCurtin$b Stephen E.
712 02$aMaryland Geological Survey.
712 02$aMaryland.$bEnergy Administration.
801  0$bGPO
801  1$bGPO
906   $aBOOK
912   $a9910713498203321
996   $aMap showing the potentiometric surface of the Magothy aquifer in southern Maryland, September, 1981$93316965
997   $aUNINA