"Vergasung." . . "Catalitzadors Patents." . . . . "Hydroprocessing catalysts for heavy oil and coal : ed" . . . . . . . . . . . . . . . . . . . . "Hydroprocessing catalysts for heavy oil and coal" . "Hydroprocessing catalysts for heavy oil and coal"@en . . . . . . . "Patents" . "Patents"@en . . "Katalysator." . . "Kohleveredelung." . . "Schweröl." . . "Hidrogenació Patents." . . "NDC" . . . .