The deposits of the useful minerals & rocks - Volume I : Ore - deposits in general - magmatic segregations contact - deposits - tin lodes - quicksilver lodes

By Beyschlag, F.. London Macmillan and Co, Limited 1914 . xxviii, 503p. 22.5cm x 16cm.

The deposites of the useful minerals & rocks - Volume 2 : Lodes - metasomatic deposits - ore beds - gravel deposits

By Beyschlag, F.. London Macmillan and co, ltd 1916 . xxi, (515-1262)p, [4]p. 22cm x 14cm.