Extract residues (coal), naphthalene oil, alk.

Extract residues (coal), naphthalene oil, alk., naphthalene-low

Extract residues (coal), supercrit. gas

Extract residues (coal), tar oil alk.

Extract residues (coal), tar oil alk., carbonated, limed

Extract residues (coal), tar oil alk., naphthalene distn. residues

Extract residues, acidified pigskin, heavy layer

Extract residues, acidified pigskin, light layer

Extracts (coal), coal tar pitch solvent, reaction products with 2, 4, 6-trinitrophenol

Extracts (coal), coal tar pitch solvent, reaction products with iodine

Extracts (coal), high-temp. coking condensate alk.

Extracts (petroleum), asphaltene-low vacuum residue solvent

Extracts (petroleum), C15-30-arom., hydrotreated

Extracts (petroleum), carbon-treated gas oil solvent

Extracts (petroleum), catalytic reformed light naphtha solvent

Extracts (petroleum), clarified oil solvent, condensed-ring-arom.-contg.

Extracts (petroleum), clay-treated gas oil solvent

Extracts (petroleum), cold-acid

Extracts (petroleum), cold-acid, C3-5, butene-rich

Extracts (petroleum), cold-acid, C4-6