TY - BOOK AU - Taff,Charles Albert TI - Commercial motor transportation AV - HE5623 .T3 1961 U1 - 338.3 23 PY - 1961/// CY - U.S.A PB - R.D. Irwin, INC. KW - Transportation, Automotive KW - United States N1 - Includes bibliographical references and index ER -