Lekhi, Romesh Kumar Technological revolution in agriculture : a case study of Punjab / Romesh Kumar Lekhi - New Delhi : Classical Publishing , 1984 - 128p. : ill. ; 20 cm. Includes bibliographical references and index. Subjects--Topical Terms: Agricultural mechanizationAgricultureAgricultural innovationsTechnological change Dewey Class. No.: 631.3 / LEK