TY  - BOOK
AU  - Lister, J.E.
TI  - The screening and grading of materials
U1  - 620.11 21st ed.
PY  - 1924///
CY  - London
PB  - Ernest Benn
KW  - Grading
KW  - Materials
KW  - Screens
N1  - Index: pp 143-44
ER  -