000219609 000__ 01874ces\a2200469\a\45e0
000219609 001__ 219609
000219609 005__ 20220217104143.0
000219609 006__ sgr\\\\\\\\f0\\\\0
000219609 007__ he\bmb024bbca
000219609 008__ 990802c19uu9999mdu\\\\\\\c\\f\\0\\\eng\d
000219609 010__ $$a   99028498
000219609 0341_ $$aa$$b250000$$dW0770000$$eW0760000$$fN0390000$$gN0380000
000219609 035__ $$a(OCoLC)40889172
000219609 035__ $$a219609
000219609 037__ $$bUSGS Books and Open-File Reports Section, Denver, CO 80225
000219609 040__ $$aGPO$$cGPO$$dISE
000219609 042__ $$alcd
000219609 043__ $$an-us-md
000219609 049__ $$aISEA
000219609 052__ $$a3841
000219609 074__ $$a0624-H (MF)
000219609 0860_ $$aI 19.76:
000219609 1102_ $$aGeological Survey (U.S.)
000219609 24510 $$aDifference between the potentiometric surfaces of the Aquia Aquifer of ... and ... in southern Maryland$$h[microform] /$$cU.S. Department of the Interior, U.S. Geological Survey ; prepared in cooperation with Maryland Geological Survey and Maryland Tidewater Administration.
000219609 255__ $$aScale 1:250,000$$c(W 77⁰--W 76⁰/N 39⁰--N 38⁰).
000219609 260__ $$aTowson, Md. :$$bU.S. Geological Survey ;$$aDenver, Colo. :$$bBooks and Open-File Reports [Section, distributor,
000219609 300__ $$amaps ;$$c22 x 17 cm.
000219609 310__ $$aBiennial
000219609 4901_ $$aOpen-file report
000219609 500__ $$aPotentiometric contours.
000219609 500__ $$a"Base from USGS Digital line graph, 250,000."
000219609 500__ $$aCoordinates for map based on: Sept. 1990.
000219609 500__ $$aDescription based on: Sept. 1990.
000219609 533__ $$aMicrofiche.$$m<Sept. 1990->$$b[Denver, Colo. :$$cU.S. Geological Survey].$$emicrofiches : negative.
000219609 650_0 $$aGroundwater$$zMaryland, Southern$$vMaps.
000219609 650_0 $$aAquifers$$zMaryland, Southern$$vMaps.
000219609 651_0 $$aMagothy Aquifer$$vMaps.
000219609 7101_ $$aMaryland.$$bTidewater Administration.
000219609 7102_ $$aMaryland Geological Survey.
000219609 830_0 $$aU.S. Geological Survey open-file report.
000219609 85231 $$bdfich$$hI 19.76:
000219609 909CO $$ooai:library.usi.edu:219609$$pGLOBAL_SET
000219609 936__ $$aSept. 1993 LIC
000219609 980__ $$aBIB
000219609 980__ $$aGOV RESOURCE
000219609 994__ $$aE0$$bISE