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[1920.] 



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Washington, 1920. A.C. 

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Bull. Geol. Soc. Am. xxx. pp. 379-388. 1919. 

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 1920. 



OULIANOV, N. Sur les Replis du Synclinal carbonifere de Salvan-Chatelard. 



Pull. Soc. valid. Sci. nat. lii. Proc.-verb. pp. 131-134?. 1920. 

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1920. 



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 . See also Lu&eon, M., 5. 



OVERBECK, R. M. Lode Deposits near the Nenana Coal Field [Alaska]. Bull. 



U.S. Geol. Surv. no. 662, pp. 351-362, pi. xvii. 1918. 

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 1920. 



OXAAL, J. Huler av Gronlitypen. Norsk geol. Tidsskr. iv. pp. 1-5, figs, 1916. 



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PACK, R. W. The Sunset-Midway Oil Field, California. Prof. Papers, U.S. 



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 PACKARD, A. S. Obit.— See Mead, A. D. 

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PAIGE, S. United States Geological Survej r as a Civic Institution during the 



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PALACHE, C. The Two-Circle Goniometer. Am. Min. v. pp. 23-33, figs. 1920. 



2. The Gnomonic Projection. Am. Min. v. pp. 67-80, figs. 1920. 



3. Further Notes on Crystal Drawing. Am. Min. v. pp. 96-99, figs. 1920. 



4. The Goldschaiidt Two-Circle Method : Calculations in the Isometric 



System ; — In the Tetragonal System ; — In the Hexagonal System; — In the 



Orthorhombic System ; — In the Monoclinic Svstem, illustrated by Monazite 



from Weymouth, Mass. Am. Min. v. pp. 112-120, 129-131, 143-149, 158- 



159, 173-182, figs. 1920. 

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on Higginsite. Am. Min. v. pp. 159-166, fig. 1920. 

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Am. Min. v. pp. 155-157, figs. 1920. 

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xx. pp. 1-155, figs., geol. map. 1919. 

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 PALFY, M. von. Geologische Notizen aus dem Persanyer Gebirge. Jahresb. k.- 



ung. geol. iZei'c/isaus*. 1916, pp. 285-293. 19] 8. 

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Jahresb. k.-ung. geol. Reichsanst. 1916, pp. 487-505, figs. [geol. sketch-maps]. 



1920. 



PALLAUSCH, A. Obit.— See Tietze, E. E. A., 3. 



PALMER, H. S. New Graphic Method for Determining the Depth and Thickness 

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 pp. 123-128, figs., pis. xiv-xvi. 1918. 



2. Radian Measures in Plane-Table Mapping. Econ. Geol. xv. pp. 266-267. 



1920. 



9 2 



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