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Rupela, O P and Mittal, S and Dart, P J and Thompson, J A and Sudarshana, M R and Toomsan, B and Annapurna, K (1991) Variability in Different Characters of Bacteria Nodulating Chickpea. International Chickpea Newsletter, 25. pp. 35-36.
Giller, K E and Sudarshana, M R and Thompson, J A and Rupela, O P (1988) Evaluation of 15N-isotope dilution for measurement of nitrogen fixation in chickpea (Cicer arietinum L.). Biology and Fertility of Soils, 6 (4). pp. 347-351.
Rupela, O P and Toomsan, B and Mittal, S and Dart, P J and Thompson, J A (1987) Chickpea rhizobium populations: Survey of influence of season, soil depth and cropping pattern. Soil Biology and Biochemistry, 19 (3). pp. 247-252. ISSN 0038-0717
Rao, J V D K K and Thompson, J A and Sastry, P V S S and Giller, K E and Day, J M (1987) Measurement of N2-fixation in field-grown pigeonpea [Cajanus cajan (L.) Millsp.] using15N-labelled fertilizer. Plant and Soil, 101 (1). pp. 107-113. ISSN 0032-079X
Rupela, O P and Sudarshana, M R and Mittal, S and Thompson, J A (1984) Chickpea Microbiology: Report of Work 1981-82. Monograph. ICRISAT, Patancheru, Andhra Pradesh, India.
Thompson, J A (1982) Inoculants And Ecology Of Rhizobium. In: Proceedings of National Symposium on Biological Nitrozen Fixation., 25th to 27th Feb 1982, Indian Agricultural Research Institute, New Delhi, India.
Thompson, J A (1981) Pulse Microbiology At ICRISAT - Past, Present and future. In: Institute Seminar, 7 July, 1981, ICRISAT, Patancheru.