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Results found in several dictionaries: Collins, Collaborative Dictionary
concerning 
  prep  (=to do with) concernant, à propos de 
He refused to answer questions concerning his private life.   
For further information concerning the job, contact Mr Robert White.  Pour plus d'informations concernant cet emploi, contacter M. Robert White. 
  adj  (=worrying) inquiétant(e)  
It is very concerning that such a criminal is still on the loose.   

Collaborative Dictionary     English-French
concerned exp. 1) concerné, 2) préoccupé Reverso General Dictionary 
industrial concern n. une entreprise industrielle Reverso General Dictionary 
security concerns n. les questions de sécurité Reverso General Dictionary 
spark... concern vt. susciter... interrogation Reverso General Dictionary 
concerned member state n. un état membre concerné Reverso General Dictionary 
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'concerning' also found in translations in French-English dictionary
souci n. 1) concern (m), 2) marigold (m) Reverso General Dictionary 

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