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Group-structural composition of thiophenic-aromatic concentrates of 400°–450°C distillate of Usino heavy crude oil

✍ Scribed by A.Yu. Poberii; L.P. Karmanova; N.K. Lyapina

No coin nor oath required. For personal study only.

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Group-structural composition of 450°–500

✍ T.S. Nikitina; Ye.S. Brodskii; N.K. Lyapina; A.A. Berg 📂 Article 📅 1989 🏛 Elsevier Science ⚖ 384 KB

Group-structural composition of 500°–540

✍ T.S. Nikitina; N.K. Lyapina; Ye.S. Brodskii; A.D. Ulendeyeva; A.A. Berg 📂 Article 📅 1989 🏛 Elsevier Science ⚖ 522 KB

Structural-group composition of sulphide

✍ N.K. Lyapina; M.A. Parfenova; V.S. Shmakov 📂 Article 📅 1983 🏛 Elsevier Science ⚖ 280 KB