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Lignite in Greece, by Albert L. Toenges, W.L. Crentz, B.C. Parks and R.F. Abernethy. [Preface by Ralph L. Brown.].

Albert Louis ToengesAlbert L. ToengesW. L. CrentzB. C. ParksR. F. AbernethyWilliam L. Crentz

出版	U.S. Government Printing Office, 1951
URL	http://books.google.com.hk/books?id=jGGLuAAACAAJ&hl=&source=gbs_api