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- [7] LEAD, CADMIUM, COPPER AND ZINC CONTAMINATION IN AND ON SPICES FLEISCHWIRTSCHAFT, 1978, 58 (05): : 857 - &
- [8] COPPER, ZINC, LEAD AND CADMIUM WITHIN THE PLACENTA ZENTRALBLATT FUR GYNAKOLOGIE, 1984, 106 (20): : 1357 - 1361
- [10] POLAROGRAPHIC DETERMINATION OF CADMIUM, LEAD, COPPER AND ZINC REVISTA PORTUGESA DE QUIMICA, 1968, 10 (04): : 206 - &