Robert H. Langworthy

Policing in America: A Balance of Forces (4th Edition)  Lawrence F. Travis III Robert H. Langworthy Hardcover. Prentice Hall, 2007-03-02 ISBN 9780131580220     Policing in America: A Balance of Forces (3rd Edition)  Robert H. Langworthy Lawrence F. Travis Hardcover. Prentice Hall, 2002-05-06 ISBN 9780130926241     Policing in America: A Balance of Forces (2nd Edition)  Robert H. Langworthy Lawrence F. Travis Hardcover. Prentice Hall, 1998-08-06 ISBN 9780136462170     Policing in America: A Balance of Forces (Macmillan Criminal Justice)  Robert H. Langworthy Lawrence F., III Travis Hardcover. Macmillan Coll Div, 1994-01-01 ISBN 9780023674211     The Structure of Police Organizations  Robert H. Langworthy Hardcover. Praeger Publishers, 1986-11-07 ISBN 9780275923280