Harris, Marshall Vertical coordination via contract farming / Marshall Harris & Dean T. Massey - Washington : Government Printing Office , 1968 - v, 101p. : ill. ; 32 cm. - ERS miscellanous publications . Includes bibliographical references and index. Subjects--Topical Terms: AgricultureEconomic aspectsVertical integrationFarm management Dewey Class. No.: 631 / US