Abstract

References
1.
Cotes
J E
. (1968 ) Lung Function . Oxford .
2.
Fuchs
S
Valade
P
. (1951 ) Arch. Mal. prof.
12 , 191 .
3.
Gandevia
B
. (1963 ) Brit. J. industr. Med.
20 , 204 .
4.Medical Research Council (1965 ) Lancet
i , 775 .
5.
Munn
A
. (1965 ) Ann. occup. Hyg.
8 , 163 .
