01590nam a2200325 k 4500001001500000005001500015008004100030034005600071035002000127040001300147049002100160052002200181086002100203110004500224245022900269255007500498260007400573300002300647490002100670500004700691500001900738500009100757650005200848650006200900651003700962700003600999830006001035900002201095963014701117WMF000105669  20201125102043840303s1983    us ag     a     1   eng  1 aab250000/dW1343000.eW1315000fN0571000gN0560000  a(OCoLC)10482283  aGPOcGPO0 lAV0000067918fXA06aI 19.76b83-420-V  aI 19.76:83-420-V  aGeological Survey (미국)0KAB20201035510aDistribution and abundance of tungsten, determined for colorimetric and spectrographic analysis, in the minus-80-mesh fraction of stream sediments, Petersburg area southeast Alaskah[microform]/dJohn B. Cathrall... [et al.]  aScale 1:250,000c(W 134p0s30?-W 131p0s50?N 57p0s10?-N 56p0s00?  a[Reston, Va.?]:bU.S. Dept. of the Interior, Geological Survey,c1983  a1 map;c53 x 70 cm00aOpen file report  aRelief shown by contours and spot heights.  a"Preliminary."  aMicrofiche. [Denver, Colo. : U.S. Geological Survey, 1983?] 1 microfiche ; 11 x 15 cm. 0aTungsten oreszAlaskazPetersburg RegionxMaps. 0aGeochemical prospectingzAlaskazPetersburg RegionxMaps. 0aAlaskazPetersburg RegionxMaps.1 aCathrall, John B.0KAC2020J0573 0aOpen-file report (Geological Survey (U.S.));v83-420-V.10a캐스럴, 존 B.  aTungstenaoresaGeochemicalaprospectingaMapsaMapsaAlaskaaPetersburgaRegionaAlaskaaPetersburgaRegionaAlaskaaMapsaPetersburgaRegion