Gupta, D. P. Agricultural development in Haryana : regional and district wise variations in crop production and productivity / D. P. Gupta - Delhi : Agricultural Economics Research Centre (AERC) , 1982 - 25p. : ill. ; 30 cm. - AERC Research Study No.82/1 . Includes bibliographical references. Subjects--Topical Terms: Agricultural development--India Gov. Doc. Class. No.: IND Del. U AERC RS-82/1