TY  - BOOK
AU  - Beringer,C.
AU  - Beringer,J.J.
TI  - A text-book of assaying: for the use of those connected with mines 
T2  - Griffin's scientific text-books
AV  - TN550 BER
PY  - 1921///
CY  - London
PB  - Charles Griffin and Company
KW  - Assaying
N1  - Includes index
ER  -