RITCHIE Donald A , 1945- The U.S. congress : a very short introduction / Donald A Ritchie. - New York : Oxford Univ Press , 2010. - xvii, 146 pages : illustration ; 18 cm. - Very short introductions ; Vol.244 . Includes bibliographical references (p. 133-138) and index. ISBN: 9780195338317 (pbk.) : GBP7.99 Subjects--Topical Terms: UNITED STATES. CONGRESSES