TY - BOOK AU - Thomas,Gerald W. TI - Progress and change in the agricultural industry: an overview U1 - 338.1 22 PY - 1969/// CY - Dubuque, Iowa PB - Kendall/Hunt Pub. Co. KW - Agriculture KW - Economic aspects KW - United States KW - Agronomy N1 - Includes bibliographical references and index ER -