A text-book of assaying :
Beringer, Cornelius,
A text-book of assaying : For the use of those connected with mines / By c. and j. j. beringer ; rev. by j. j. beringer - 9 - Xvi. 456 páginas - Griffin's metallurgical series .
Ensayes
TN550 / B47 1904
A text-book of assaying : For the use of those connected with mines / By c. and j. j. beringer ; rev. by j. j. beringer - 9 - Xvi. 456 páginas - Griffin's metallurgical series .
Ensayes
TN550 / B47 1904