smoła węglowa

Do not use coal tar to treat large skin areas.

Some forms of coal tar may be applied 1 to 4 times per day.

Do not use coal tar over long periods of time without your doctor's advice.

There may be other drugs that can interact with coal tar.

Operations were still based on coal tar, salt, and construction materials.

Talk with your doctor before using coal tar if you are allergic to any of the ingredients.

The bank discovered that the land below the building contained coal tars.

Coal tar was a component of the first sealed roads.

The substance is a sodium salt derived from coal tar.

In low concentrations, however, coal tar is used as a topical medicine.