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- [6] UNDERGROUND RESERVOIR OF CRUDE-OIL, CRUDE-OIL PRODUCTS AND GASES ERDOL & KOHLE ERDGAS PETROCHEMIE, 1975, 28 (08): : 371 - 372
- [9] NITROGEN CONTAINING COMPOUNDS FROM IRAQIAN CRUDE-OIL - KIRKUKREGION - ISOLATION AND ANALYSIS ERDOL & KOHLE ERDGAS PETROCHEMIE, 1992, 45 (10): : 401 - 407