TY  - BOOK
AU  - Brasser, L. J.
AU  - Mulder, W. C.
ED  - World Clean Air Congress(8)
TI  - Man and his ecosystem: :(Vol.2)Proceedings
U1  - 594.522 
PY  - 1939///
CY  - New york
PB  - Elsevier
ER  -