Gaya APA
World Health Organization, Geneva. (1980).
Recommended Health-Based Limit in Occupational Exposure to Heavy Metals .
:
.
Gaya Chicago
World Health Organization, Geneva.
Recommended Health-Based Limit in Occupational Exposure to Heavy Metals.
:
,
1980.
Text.
Gaya MLA
World Health Organization, Geneva.
Recommended Health-Based Limit in Occupational Exposure to Heavy Metals.
:
,
1980.
Text.
Gaya Turabian
World Health Organization, Geneva.
Recommended Health-Based Limit in Occupational Exposure to Heavy Metals.
:
,
1980.
Print.