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Yule, D F and Reddy, M V and Reddy, V R and George, P J and Cogle, A L (1991) Effects of soil management on population abundance and biomass of earthworms in a semi-arid tropical alfisol. In: Proceeding 12th International Conference of International Soil Tillage Research Organization, 1991, Ibadan, Nigeria.
Awadhwal, N K and Yule, D F (1991) New implements for small farmers of the semi-arid tropics. Animal genetic resources, 68 (1). pp. 73-77. ISSN 1014-6954
Reddy, M V and Reddy, V R and Kumar, V P K and Yule, D F and Cogle, A L (1992) Soil Management and Seasonal Community Structure of Soil Microarthropods in Semi-Arid Tropical Alfisols. In: Proceedings Of The International Conference Problems In Modern Soil Management , August 31 - Septombor 5,1992, Brno, Czechoslovakia.
Cogle, A L and Rao, K P C and Yule, D F and George, P J and Srinivasan, S T and Smith, G D and Jangawad, L S (1997) Soil management options for Alfisols in the semi-arid tropics: annual and perennial crop production. Soil & Tillage Research, 44 (3-4). pp. 235-253. ISSN 0167-1987