
1) Maktab al-khidmat 2) Terrorist group 3) Terrorist organization
Found on
https://www.crosswordclues.com/clue/mak

German occupational exposure limit defined as “The maximum permissible concentrations of chemical compounds in the air within a working area which, according to current knowledge, generally do not impair the health of employees nor cause undue annoyance�.
Found on
http://www.encyclo.co.uk/local/20474

Maximal arbeitsplatz konzentration (German)
Found on
https://sis.nlm.nih.gov/enviro/iupacglossary/annex1.html

The German Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Place. It is responsible for setting MAK values (Maximale Arbeitsplatz-Konzentration: maximum workplace concentration - equivalent to an OEL) for chemicals.
Found on
https://www.encyclo.co.uk/local/20720
No exact match found.