Uppal, H. L. Green manuring of soils for increasing crop yield for stepping up food production in the country / H. L. Uppal. - Amritsar : Land Reclamation, Irrigation and Power Research Institute, 1962. - 26 p. : ill. ; 24 cm. 334 334 Subjects--Topical Terms: Green manuring--India. Dewey Class. No.: 631.87406 / H1g