'Montan wax is a mineral wax extracted from this; when rubbed or heated, it emits a bituminous odor'
coal
WAXES: Montan wax is a mineral wax extracted from this; when rubbed or heated, it emits a bituminous odor
Montan wax is a mineral wax extracted from this; when rubbed or heated, it emits a bituminous odor
Montan wax is a mineral wax extracted from this; when rubbed or heated, it emits a bituminous odor
WAXES
coal
WAXES