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ISSN (Print) 2284-8576 - ISSN (Online) 2284-8584
Published By Petroleum-Gas University of Ploiesti
SUBJECTS : Economics | Development | Business | Organizations | Market
ISSN (Print) 2247-6377 - ISSN (Online) 2247-8558
SUBJECTS : Education | Psychology
ISSN (Print) 2734-5319 - ISSN (Online) 2972-0370
SUBJECTS : Petroleum | Gas | Reservoir | Engineering | Technology | Efficiency