Peerless Roofing (C-39) Book & CD-Rom Combo includes both the Peerless California Contractors' Exam Study Guide: Roofing (C-39) and the Peerless Roofing (C-39) Computerized Program. Peerless Institute's home study books are prepared from state recommended reference materials to make studying easier. The Peerless California Contractors' Exam Study Guide: Roofing (C-39) includes hundreds of multiple choice questions and answers and multiple complete practice tests. The Peerless Roofing (C-39) Computerized Program maximizes your retention of material when taking the California State Contractors' License Exam.??ยจ Your test is automatically graded, with corrected answers for you to review. Author: Peerless Institute