A Text-book of Assaying :
Beringer, C.
A Text-book of Assaying : For the Use of Those Connected with Mines. [electronic resource] / C. Beringer - Project Gutenberg, 2006 - Project Gutenberg 18751 .
Public domain in the USA.
Electronic text
Assaying
TN
A Text-book of Assaying : For the Use of Those Connected with Mines. [electronic resource] / C. Beringer - Project Gutenberg, 2006 - Project Gutenberg 18751 .
Public domain in the USA.
Electronic text
Assaying
TN