| |||
| EK numurs | |||
| אנגלית אוצר מילים | |||
| |||
| ECN (a reference number used by the European Communities to identify dangerous substances, in particular those registered under EINECS. A Hun) | |||
| |||
| European Commission number (Karabas) | |||
| Enzyme Commission number (http://en.wikipedia.org/wiki/Enzyme_Commission_number Andrey Truhachev) | |||
| European Community number (igisheva) | |||
