Migration and metropolitan growth : two analytical models / by Ira S. Lowry. Lowry, Ira S. Migration, Internal United States. Migration, Internal Mathematical models. HB1965 .L6 312 LOM Includes bibliographical references. San Francisco : Chandler Pub., c1966. c1966. 1966 Text xii, 118 p. : eng UCLA Institute of Government and Public Affairs series United States.