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- [4] PRODUCTION TECHNOLOGY OF CRUDE-OIL AND NATURAL-GAS ERDOL & KOHLE ERDGAS PETROCHEMIE, 1975, 28 (08): : 370 - 371
- [8] OPTIMAL INTERTEMPORAL SUPPLIES OF CRUDE-OIL AND NATURAL-GAS FOR CANADA RESOURCES AND ENERGY, 1985, 7 (04): : 395 - 424
- [10] USE OF ISOTOPE ANALYSES IN CRUDE-OIL AND NATURAL-GAS RESEARCH ERDOL & KOHLE ERDGAS PETROCHEMIE, 1981, 34 (12): : 537 - 544