TY  - GEN
TI  - Lead and Zinc flotation by column cell
PB  - [Nippon Mining Co.Ltd.]
KW  - LEAD ORE TREATMENT-FLOTATION
KW  - FLOTATION-LEAD ORE TREATMENT
KW  - ZINC ORE TREATMENT-FLOTATION
KW  - FLOTATION-ZINC ORE TREATMENT
N1  - a photocopy
ER  -