01277nas 2200421-a 450 991014505710332120160412030013.12330-5703(OCoLC)52054011(CKB)991042742095952(CONSER)--2003255045(EXLCZ)9999104274209595220030414a198u9999 -a- aengurcnu||||||||txtrdacontentcrdamediacrrdacarrierU.S. Geological Survey circularWashington U.S. G.P.O. ;Reston, VaU.S. Dept. of the Interior, U.S. Geological Survey1067-084X United States Geological Survey circularUS Geological Survey circularCircular (Geological Survey (U.S.))Geological Survey circularU S GEOL SURV CIRCU.S. Geol. Surv. circ.GeologyUnited StatesGeologyfast(OCoLC)fst00940627United StatesfastGeologyGeology.557.3Geological Survey (U.S.)JOURNAL9910145057103321U.S. Geological Survey circular1906085UNINA