National Learning Corporation

Plumber, 591 National Learning Corporation

The Plumber Passbook(R) prepares you for your test by allowing you to take practice exams in the subjects you need to study. It provides hundreds of questions and answers in the areas that will likely be covered on your upcoming exam, including but not limited to: materials and methods used in plumbing work; usage of tools, fittings and equipment of plumbing work; building code; plan reading; mathematics; and more.