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