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Kang, G S and Beri, V and Sidhu, B S and Rupela, O P (2005) A new index to assess soil quality and sustainability of wheat-based cropping systems. Biology and Fertility of Soils, 41 (6). pp. 389-398. ISSN 0178-2762
Sidhu, B S and Rupela, O P and Beri, V and Joshi, P K (1998) Sustainability implications of burning rice- and wheat-straw in Punjab. Economic and Political Weekly, 33 (39). 163A-168A. ISSN 0012-9976
Rupela, O P and Gopalakrishnan, S and Sidhu, B S and Beri, V (2003) Composting Rice Straw in Semi-Arid Conditions. In: Management of crop residues for sustainable crop production: Results of a co-ordinated research project organized by the Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture 1996–2001. International Atomic Energy Agency, Vienna, Austria, pp. 171-178. ISBN 92–0–104203–5
Rupela, O P and Sidhu, B S and Gopalakrishnan, S and Saini, S K and Beri, V (1998) Preparation and evaluation of Rice-Straw Compost. In: 2nd Research Co-ordination meeting of the FAO/IAEA Co-ordinated Research Project on “The use of nuclear techniques in the management of organic matters to enhance soil productivity and crop yields”, 20-24 April 1998 , Vienna, Austria.
Sidhu, B S and Rupela, O P and Gopalakrishnan, S and Beri, V (1997) Searching Alternatives To Burning Rice Straw. In: Prceedings of the Third Agricultural Science Congress, March 12-15, 1997, PAU, Ludhiana, India.
Sidhu, B S and Rupela, O P and Gopalakrishnan, S and Beri, V (1997) Searching Alternatives to burning rice straw. In: Third Agricultural Science congress Punjab Agricultural University , 12-15 March 1997, Ludhiana, Punjab.