TY  - BOOK
AU  - Thring,M.W.
ED  - University of Sheffield.
TI  - Air pollution : : based on papers given at a conference held at the University of Sheffield, September, 1956 / 
PY  - 1957///
CY  - London : 
PB  - Butterworths Scientific Publications
KW  - Contaminación del aire
KW  - spines
N1  - Incluye referencias bibliográficas
ER  -