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![Statistics of Hydraulic Works and Hydrology of England, Canada, Egypt and India [microform]](https://images.cdn2.buscalibre.com/fit-in/180x180/b1/4d/b14db9d969e1f425bd20951392e0b12c.jpg)





![The Mineral Region of Lake Superior Comprising Its Early History [microform]: Those Parts of Dr. Douglass Houghton's Reports of 1841 and ' 42 Relating](https://images.cdn2.buscalibre.com/fit-in/180x180/c0/1a/c01a61c39b796302c15d0c45d6605df9.jpg)

![Library Extension Publication [serial]; 20](https://images.cdn2.buscalibre.com/fit-in/180x180/61/01/610191f0f3cdc4270c9ca1258e1257e0.jpg)








![The Mineral Resources of a Portion of the Omineca Mining Division [microform]](https://images.cdn2.buscalibre.com/fit-in/180x180/ad/f1/adf11139a237e5e5a9c6a9270c01ccf6.jpg)
![Journals of the Senate and House of Commons of the General Assembly of North-Carolina at Its Session in ... [serial]; Senate 1822](https://images.cdn3.buscalibre.com/fit-in/180x180/17/76/1776ef9d270956b3b0097a4e9199a9d5.jpg)

![Gold Mining and the Gold Discoveries Made Since 1851 [microform]](https://images.cdn3.buscalibre.com/fit-in/180x180/ae/f1/aef16981b89ca4ce582d16e48523e46e.jpg)




![Gold and Silver Ores, What is Their Value? [microform]: Simple Field Tests for Prospectors With an Inexpensive Outfit](https://images.cdn3.buscalibre.com/fit-in/180x180/31/5f/315fcd39d9ebaef273bd1864c054bcc2.jpg)

















