פריטים דומים: Petroleum - Gas University of Ploiesti Bulletin, Educational Sciences Series
- Petroleum - Gas University of Ploiesti Bulletin, Technical Series
- Petroleum - Gas University of Ploiesti Bulletin, Philology Series
- Petroleum - Gas University of Ploiesti Bulletin, Economic Sciences Series
- Petroleum - Gas University of Ploiesti Bulletin, Law & Social Sciences Series
- Petroleum - Gas University of Ploiesti Bulletin, Mathematics - Informatics - Physics Series
- Liquid Petroleum Gas Industry Profile: Belgium