000198948 000__ 01660mem\a2200385\a\4500 000198948 001__ 198948 000198948 005__ 20220217103915.0 000198948 007__ heubmb024bbca 000198948 008__ 930903r19931992vauag\\\\\a\\f\\1\\\eng\d 000198948 0341_ $$aa$$b100000$$dW1170000$$eW1160000$$fN0330000$$gN0323000 000198948 035__ $$a(OCoLC)ocm28743374 000198948 035__ $$9AAW8849SI 000198948 035__ $$a198948 000198948 040__ $$aGPO$$cGPO$$dSPI 000198948 049__ $$aISEA 000198948 052__ $$a4364$$bS24$$bI5 000198948 074__ $$a0624-H (MF) 000198948 0860_ $$aI 19.76:92-548 000198948 1102_ $$aGeological Survey (U.S.) 000198948 24510 $$aAeromagnetic map of the El Cajón 1:100,000 scale quadrangle, California$$h[microform] /$$cU.S. Department of the Interior, U.S. Geological Survey ; by Robert C. Jachens. 000198948 255__ $$aScale 1:100,000$$c(W 117°00ʹ--W 116°00ʹ/N 33°00ʹ--N 32°30ʹ). 000198948 260__ $$a[Reston, Va.?] :$$bThe Survey ;$$a[Denver, Colo. :$$bBooks and Open-File Section, distributor],$$c1992. 000198948 300__ $$a1 map ;$$c56 x 94 cm., on sheet 92 x 122 cm. 000198948 4901_ $$aOpen-file report ;$$v92-548 000198948 500__ $$aRelief shown by contours and spot heights. 000198948 500__ $$a"Topographic contour on base 50 meters." 000198948 500__ $$aDistributed to depository libraries in microfiche. 000198948 500__ $$aShipping list no.: 93-0914-M. 000198948 500__ $$aIncludes text, bibliographical references, diagram, table, index and location maps. 000198948 533__ $$aMicrofiche.$$b[Denver, Colo. :$$cU.S. Geological Survey,$$d1993]$$e1 microfiche : negative. 000198948 650_0 $$aGeomagnetism$$zCalifornia$$zSan Diego County$$vMaps. 000198948 650_0 $$aGeomagnetism$$zCalifornia$$zImperial County$$vMaps. 000198948 7001_ $$aJachens, Robert C. 000198948 830_0 $$aU.S. Geological Survey open-file report ;$$v92-548. 000198948 85230 $$bdfich$$hI 19.76:$$i92-548 000198948 909CO $$ooai:library.usi.edu:198948$$pGLOBAL_SET 000198948 948__ $$ac:rk 000198948 980__ $$aBIB 000198948 980__ $$aGOV RESOURCE