Gudkov P. Askoldovsky mine and other gold deposits on Askold Island. In Russian/Gudkov P. Askoldovskiy rudnik i drugie mestorozhdeniya zolota na ostrove Askold. Materials on geology and mineral resources of the Far East. Issue 20. Vladivostok. Geological Committee of the Far East. 1921. 26 p. Please contact us for details on condition of available copies of the book. SKUalb06660754173c79fd.