Gaya APA
Ahrens, A. (2006).
Hazardous Chemicals in Products and Processes Substitution as an Innovative Process .
germany:
Physica Verlag.
Gaya MLA
Ahrens, Andreans.
"Hazardous Chemicals in Products and Processes Substitution as an Innovative Process".
germany:
Physica Verlag,
2006.
Text.