TY  - BOOK
AU  - Piotrowski,J.K.
AU  - ColemanD.O.
TI  - Environmental hazards of heavy metals: summary evolution of lead, cadmium and mercury 
PY  - 1980///
CY  - London
PB  - University of London
KW  - Chlorofluorocarbons
KW  - Environmental aspects
ER  -